PDF malware analysis — malicious · 4bfbded0307ca5f2

MALICIOUS

PDF

261.3 KB Created: 2021-07-05 19:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: f9eb058332d783305205ec96e80f8748 SHA-1: ce5e070ed82d91355c769258e55969554e79362b SHA-256: 4bfbded0307ca5f295e95af8678b48701e3f9cba0b102bfc8b9656696fa5acc7

226 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It specifically requests recovery secrets or MFA confirmation, aligning with credential harvesting tactics. The numerous embedded URLs, many pointing to compromised WordPress sites, likely serve as landing pages for this phishing attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9815

Heuristics 7

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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.
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://huntic.ru/uplcv?utm_term=udp+packets+per+second PDF link annotation
- http://aliceinformaticasrl.com/user/pages/85968386268.pdfIn PDF document text
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac86b34a1e---42704220945.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/pk2c9qic8ob1vee6cavkrdk9qb/tibigabimotorowid.pdfIn PDF document text
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/0efe45a45c89bae875a838869ef2842c/60938604658.pdfIn PDF document text
- https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/7e085b6813616a2be7bfb88bd01f2334/bedipuz.pdfIn PDF document text
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/491etlqo4vu4d0b5udjqkbv93n/57685826557.pdfIn PDF document text
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d38c1eaa2ce---xepewodo.pdfIn PDF document text
- https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094b5ed741c9---wuzewadixelogowini.pdfIn PDF document text
- https://cosmeticdermatologymiamibeach.com/uploads/data/files/96973941128.pdfIn PDF document text
- http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d76e7175910---tukuweredexogi.pdfIn PDF document text
- https://nepalmicrofinancesummit.org/userfiles/files/81814336638.pdfIn PDF document text
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160ba042422ba9---17631174621.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/68d78b1b679430cee37429cf7c3be0f2/49901474550.pdfIn PDF document text
- http://rajskiewakacje.pl/userfiles/file/fevasurelowixasitera.pdfIn PDF document text
- http://myshopekerala.com/userfiles/file/xukozijetufumarubugisita.pdfIn PDF document text
- http://fcv-bo.org/data/fcv-bo/userfiles/file/pamagale.pdfIn PDF document text
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607a715a80dbe---85761471934.pdfIn PDF document text
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1608dc9b619948---jusof.pdfIn PDF document text
- http://auchli-appenzeller.ch/userfiles/files/dopugobubi.pdfIn PDF document text
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078f8444b464---49704323774.pdfIn PDF document text
- https://raiporjai.com/piceditor/file/59635000052.pdfIn PDF document text
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16073fcbd77557---rupolunexejesu.pdfIn PDF document text
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/8n23se5s45p25qqo8bj4j6ik90/xopoke.pdfIn PDF document text
- http://ampletrekking.com/userfiles/file/fimogefejamunefamez.pdfIn PDF document text
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/bidoeibmvndqj0o1qjapsrplpo/11949087330.pdfIn PDF document text
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/f8a146ff6444ef9ba3abf9e034aff8f9/kafevigedapiduserolefebej.pdfIn PDF document text
- http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/mapuxugibajofirojax.pdfIn PDF document text
- http://westmoorclassof1965.com/clients/5/52/52ec68f2b927accf75267cb07bfcc891/File/bojexixefibodano.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_off0003a667.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3A667	10468 bytes
SHA-256: `14e7c30d9805be7223c9ad269a6909e246e7c4dd83a4045756dd242578683dc0`
`font_01_sfnt_off0003be52.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3BE52	18160 bytes
SHA-256: `00883b4a582b825f113ba61f51272de769bc143410e2f18d1754f1dc2260ba2c`
`font_02_sfnt_off0003ee98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3EE98	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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