PDF malware analysis — malicious · bbfe60253c49bb37

MALICIOUS

PDF

92.7 KB Created: 2021-07-04 12:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15

MD5: c62b975176b669e419b6708471f3dafd SHA-1: e2680c1c997bde0c1e5d040ece3ec803541f250b SHA-256: bbfe60253c49bb3756c4e03017025f825af09ff97fc410289ffe0010809a4bb2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable domains, indicating a link farm designed to lead users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

Nyx PDF Classifier malicious score 0.9822

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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 http://pierrevillers.fr/mairie_files/file/25483411461.pdf In PDF document text
- http://goldartline.ua/userfiles/file/79350157815.pdfIn PDF document text
- http://tanriovermensucat.com/uploads/genel/files/nukonutoxogabososig.pdfIn PDF document text
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160809d6046dde---15360966864.pdfIn PDF document text
- https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/84d2aa5f1f5bfcd821b7741e64c467ba/kededekomemukedesal.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/5283a5f41f88f70a4d87f13e08b3db7b/butojalepox.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcaf979830---zajifuk.pdfIn PDF document text
- http://osrclass1967.com/clients/8/84/84e84eb3bb32f45446e669e24fea3ebc/File/kolimekixuvidulubef.pdfIn PDF document text
- https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/87cf2b8247bbc5b7da2d5fba90c3c226/fobepukipewudugogitavaz.pdfIn PDF document text
- http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cec7c1464cc---duxovukewazumegamemexefe.pdfIn PDF document text
- https://dodatkireklamowe.pl/web/uploads/files/39552896292.pdfIn PDF document text
- http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c68ba09b912---visazolul.pdfIn PDF document text
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/2f8354d69692081e1a2a4989edc9e7ab/75467113672.pdfIn PDF document text
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/000a7e0a89d258d4c7314145e3f4ce2d/75047801612.pdfIn PDF document text
- http://historia-bfured.hu/userfiles/file/jukiroradojakirex.pdfIn PDF document text
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/614d03a97023a18c2cc8309b10117043/96440434743.pdfIn PDF document text
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/q1q5s781ki1srh9nptu3q23up9/26229635303.pdfIn PDF document text
- https://tootooair.com/FileData/ckfinder/files/20210704_87E7A8B6B7B42601.pdfIn PDF document text
- https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/fe2e7b8355229971398367064a44cddd/67019963472.pdfIn PDF document text
- https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/felf2g2erntap5c2hh3e17ev32/28369813520.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc6de555a9---23533799989.pdfIn PDF document text
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087fb372bd76---12302318171.pdfIn PDF document text
- https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092f71702eb7---virusab.pdfIn PDF document text
- http://broadmoor79.com/clients/864886/File/49946521609.pdfIn PDF document text
- https://butterfly-propertymanagement.com/userfiles/file/baxotafalasutuvegobiv.pdfIn PDF document text
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/qjmoav2j45ivrdbb74ch9jvhav/6717981592.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/5922f3385b0d7f602c6f6eb062c78d33/92023724326.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=gini+coefficient+by+country+2018PDF link annotation
- 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_off0000fe79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE79	10848 bytes
SHA-256: `ce3612cc0a186e42ba5bde40689ffee74dbc22f46d704da70fddd46be89c9f04`
`font_01_sfnt_off000117c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x117C7	20260 bytes
SHA-256: `760080d17b7ecc65f302aae26b21204493d5802a29d464a6631a3204c6fcab5d`
`font_02_sfnt_off00014bc5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14BC5	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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