PDF malware analysis — malicious · a3fe457c0168bcea

MALICIOUS

PDF

88.6 KB Created: 2021-06-29 01:14:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: ca03b2d353c11da0e58c1bbc0eeec433 SHA-1: 6974c5bfe7dacfa24e48cbefb76545a243a77a5f SHA-256: a3fe457c0168bcea2efd8390ab5d3dc4e92bf0ead03cd6caf84cc5a4896ca568

216 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains multiple links to external websites, some of which are hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs users to open a password-protected archive, a common tactic to bypass gateway security. ClamAV detection further confirms the malicious nature of the file.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

Heuristics 8

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://medvor.ru/uplcv?utm_term=setting+up+voicemail+iphone+5c PDF link annotation
- https://stef-nancy.fr/upload/document/5098500046.pdfIn PDF document text
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/16090145ecc225---tesug.pdfIn PDF document text
- http://congtyvima.com/images/Download/vomis.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/7d70fddeb7584f5779e8ba524bd12218/98025600081.pdfIn PDF document text
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2b9ebe7646---gejowokazakoxo.pdfIn PDF document text
- https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/vd36dqar95p57t1pu96kub3i9m/vuvizakido.pdfIn PDF document text
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/n1vqt8cdao1iojrffate66h3a2/demexerubepuzajegawakike.pdfIn PDF document text
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc2a4da400---wisosomajulafejotavev.pdfIn PDF document text
- http://timebank.ru/sites/default/files/photos/pagefile/jupixu.pdfIn PDF document text
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608920a8e447d---98246132155.pdfIn PDF document text
- https://pacie.vn/web/uploads/files/98816430174.pdfIn PDF document text
- https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/038bf55c15e2cf6cfadfbdf8926a3230/20653033578.pdfIn PDF document text
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/b9ade72c2ecaed4dbc66fefe510ce631/51851893444.pdfIn PDF document text
- https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/vlimbkaina807at1uiijvlu5ac/medavubiketugixi.pdfIn PDF document text
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/fa426694ff5192bd8a6ef13ea0d59b98/19919481951.pdfIn PDF document text
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16075bff7badc7---96973149517.pdfIn PDF document text
- https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/m9htojebu92hs1kj0mh46bomr6/solofuwimivepevevuzixejo.pdfIn PDF document text
- https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/2ed81418f49516eec38769ef086d7311/48623977676.pdfIn PDF document text
- http://wksystems.net/HotelEstimator/userfiles/file/lojupo.pdfIn PDF document text
- https://manuscripthandler.com/userfiles/file/misiwezutol.pdfIn PDF document text
- https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/aluf3jttoj5n3j2vvh2bi9sv1u/wadufapibagusizupojota.pdfIn PDF document text
- http://cuacongtrinh.vn/upload/files/533025740.pdfIn PDF document text
- http://lab4050.com/upload/editor/file/55078995469.pdfIn PDF document text
- http://strategie-online.net/catalogue_dynamique/file/55807927403.pdfIn PDF document text
- https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763dd1488af---bevuxixedarifulero.pdfIn PDF document text
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/hhhm393f1qngdd0okda84boc31/karufopufariborawejumix.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f67b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF67B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010e92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E92	10928 bytes
SHA-256: `e9efa086724e92b57c4543c89c71cd4a89b7b5829b0925dc14f98938f6bd70d0`
`font_02_sfnt_off000127c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x127C0	17256 bytes
SHA-256: `cb4508091b8d22607b91b9180bc949bd4a45104042fbfe1a346b9590a1752538`

Open this report in the interactive analyzer, or submit your own file for analysis.