PDF malware analysis — malicious · 5c6cc7120c7277e9

MALICIOUS

PDF

92.8 KB Created: 2021-06-29 00:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: d248e06999366a748e713af2b946a871 SHA-1: da12ba041461630293e37b14d34e1671dc0f750e SHA-256: 5c6cc7120c7277e9b479501f80d8822293f5d12a935346389e21623859445cbe

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly indicate a phishing or malware delivery scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9786

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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://ketchas.ru/uplcv?utm_term=if+you+need+more+information PDF link annotation
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16085be9556175---detufopemupi.pdfIn PDF document text
- https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/8rtn54oatlt056hu66kgr7k638/70999275923.pdfIn PDF document text
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cf856eca1---70796960706.pdfIn PDF document text
- https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/k63abol42ase8keu4etlb4op30/50677771860.pdfIn PDF document text
- https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/ef08d5643b8f8c6d6f53ff37321da122/18633845774.pdfIn PDF document text
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/2fae118ffb29e343ad82434a4f4108d7/8068954650.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/porajot.pdfIn PDF document text
- http://feriaalainversa.com/uploaded/files/48403767231.pdfIn PDF document text
- https://etonbio.com/newsLetters/images/file/75899659582.pdfIn PDF document text
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c13496759---23533429144.pdfIn PDF document text
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16093cb778117f---86827378998.pdfIn PDF document text
- https://calmoinc.com/upload/editor/file/56956679860.pdfIn PDF document text
- http://emanuelmlevin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/96551637450.pdfIn PDF document text
- http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac627ac3e36---ratodu.pdfIn PDF document text
- https://oceanflowerhotel.com/uploads/image/files/7166279316.pdfIn PDF document text
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4ed7cd3b8---22312122353.pdfIn PDF document text
- http://clair-environnement.eu/catalogue_dynamique/file/foritinafuvelegutejogazi.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/gk7qm6h8ubtd3uct70o3fm1k8c/zudokisuzaku.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/4ee5ce2a6b2ce460c207100b4c0ae2fc/poniwokutituku.pdfIn PDF document text
- http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074d01d10bdb---fesuzawokagi.pdfIn PDF document text
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160930b883f034---1213949254.pdfIn PDF document text
- http://standartbio.com/fckfiles/file/tobafubif.pdfIn PDF document text
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a23d857503b---toligadufelajotivuwu.pdfIn PDF document text
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a42a9698562---muxowuwosixope.pdfIn PDF document text
- http://aktifbant.com/resimler/files/85485824237.pdfIn PDF document text
- http://email-database.info/userfiles/file/89438374545.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f1cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1CC	10464 bytes
SHA-256: `d95fde41a65dd5d5e6136db06b3ada09dadf631fabcc58760488f3d1f72170ed`
`font_01_sfnt_off00010987.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10987	17816 bytes
SHA-256: `02dd4c73ca400dc3aa4ca4687647211181d83b56373dccddb8fcba870c3b406f`
`font_02_sfnt_off00013610.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13610	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off00014e21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14E21	16088 bytes
SHA-256: `21ff46de98f0902b53a5c0c946916a1dd4551bbaa4204463728281c4bc54dda8`

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