Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f60db3b183cfdc…

MALICIOUS

PDF

88.1 KB Created: 2021-09-10 01:22:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 54b7e7763f508da0dbd174012c017c0a SHA-1: caa69c311d54c8094883e32ee0a49242b10d957e SHA-256: d9f60db3b183cfdc261fd742c285471b97c36b76f3baedc830fd5fc4da8f1f48
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://smidgel.ru/uplcv?utm_term=peter+rabbit+movie+watch+online+free PDF link annotation
    • http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/62440706131.pdfIn PDF document text
    • http://dreamcatcherltd.com/userfiles/file/sebopedeb.pdfIn PDF document text
    • http://khaskhaan.mn/uploads/userfiles/files/maxososabafaxaxip.pdfIn PDF document text
    • https://durgabas.coop.np/ckfinder/userfiles/files/43540163746.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/rokafovogudateva.pdfIn PDF document text
    • http://fashionflutters.com/ckfinder/userfiles/files/kalijupovanusutojeriseju.pdfIn PDF document text
    • http://thevisionkharj.com/userfiles/files/76813300942.pdfIn PDF document text
    • https://handientu.vn/userfiles/file/nunirekodakudabejuwod.pdfIn PDF document text
    • http://parikshitconstruction.com/uploads/35908686414.pdfIn PDF document text
    • https://eownauto.com/uploadpic/files/31220220712.pdfIn PDF document text
    • https://tiklatakip.com/calisma2/files/uploads/litabeliruzokepewivexi.pdfIn PDF document text
    • https://evermoral.hk/upload/file/1630905785.pdfIn PDF document text
    • http://alpes-de-haute-provence.proximeo.com/ckfinder/userfiles/files/kavemitupevelebulosobef.pdfIn PDF document text
    • https://www.q-jin.ne.jp/ckfinder/userfiles/files/lidavonu.pdfIn PDF document text
    • http://lawyersmarketingusa.com/user_upload_image/file/In PDF document text
    • https://footballsod.com/images/ck-uploads/files/bumiburejidonavubelazo.pdfIn PDF document text
    • https://chambres-hotes-aube-bleue.fr/userfiles/file/81000852785.pdfIn PDF document text
    • https://indikino.com/ckfinder/userfiles/files/loxoxojufepazofisig.pdfIn PDF document text
    • http://bangiyaparishadtoronto.ca/bpt/editor/uploadfiles/6808966838.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613726541b8cc---67953577670.pdfIn PDF document text
    • http://alpes-de-haute-provence.proximeo.com/ckfinder/userfiles/files/bipevesobipuvuvikepip.pdfIn PDF document text
    • http://tantos.jp/js/upload/files/98545867260.pdfIn PDF document text
    • http://joyandwowbook.com/upload/file/finuzuzelexezexelododi.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.

FilenameKindSourceSize
font_00_sfnt_off0000f4dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DD 17596 bytes
SHA-256: 1f0c096f66391dd33f0a12569838ab012989f6dbefe89cac56f950380671e1d4
font_01_sfnt_off0001221a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1221A 10728 bytes
SHA-256: 6dcbc330fd113fb4c37e90beef2183c9323612c31d8507aa4b84285a1c650616
font_02_sfnt_off00013a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A9A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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