Malicious PDF — malware analysis report

Static analysis result for SHA-256 db058c75531d007f…

MALICIOUS

PDF

90.0 KB Created: 2021-07-19 09:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c762133938aa8d023d9cd080197d47a3 SHA-1: 1b78a958db19b05e2c418bad1d482cb7bcff8291 SHA-256: db058c75531d007f02909493e02da7c178d74ff1750126380302c3808981c3e5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to websites hosted on compromised WordPress installations and other domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/7a1781569ea70d82159de71c62188ce4/pebupilegalujowa.pdf In PDF document text
    • http://evansmedia.ca/userfiles/file/fewidajumilu.pdfIn PDF document text
    • http://erpsamik.com/ckfinder/userfiles/files/10003287277.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7b050f674---85816476224.pdfIn PDF document text
    • http://davidlbrooks.com/clients/868292/File/vigofewinutibul.pdfIn PDF document text
    • http://yavuzselimvakfi.org/resimler/site/files/64031322871.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/f07f69a2f2adbbb63497d68d10589b0c/52639369275.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16084eff148a34---paponebaserojugumuxej.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b28c173a8e6---17244688511.pdfIn PDF document text
    • http://ingenermarket.ru/userfiles/mujuxozokipitemowolut.pdfIn PDF document text
    • https://webmenuplus.com/images/file/piwozeremaxexalibog.pdfIn PDF document text
    • https://bodegoncriollo.com/userfiles/file/15253828463.pdfIn PDF document text
    • http://khyljg.com/uploadfiles/files/xuvademoge.pdfIn PDF document text
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/omg0anrr54rk5c8niv2p28gv04/lurep.pdfIn PDF document text
    • https://actor-conseil.com/files/file/wuvoxanamopozojosu.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/d2e146eb76d9b2c782df3be2efc2d0f2/fetod.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608607416c681---3258910629.pdfIn PDF document text
    • http://uk-finansist.ru/userfiles/file/gosaweso.pdfIn PDF document text
    • http://ipllaser.in/uploads/maxekevonuzanudegaxexerek.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/5vakkak3hbdk9l4sug522iar09/lezaxobepejegabusawof.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a049ecf2143---53906916214.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/15197147281.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/2563nbsr72s5s8dv5v8m24389p/tadavifidisig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=ifile+cracked+ipaPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3A 10164 bytes
SHA-256: 419c634c1fae47b6b83b345f3f3681f4456a5de20bcf095d1d73bcbfde92d4c9
font_01_sfnt_off00011303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11303 18096 bytes
SHA-256: e4fc0cdecfcbe2f8c147d5a6ab2ff32a8fbe0f2dba805c6ddf8ea206e7075439
font_02_sfnt_off000141c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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