Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a952efeb919b40…

MALICIOUS

PDF

80.7 KB Created: 2021-09-12 04:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0b68505262b74bb9b21ac697f28c50eb SHA-1: 60ea16929462761b3caf002527e84a3bf31fdb64 SHA-256: d0a952efeb919b40aa3d7199ab49f530d44a118fad7eaf6b95d9d9df1adea174
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous embedded URLs pointing to various domains, many of which are likely part of a link farm designed to redirect users. The PDF structure and the presence of external URIs suggest an attempt to redirect users to malicious websites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • 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.
  • 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://pixomot.ru/uplcv?utm_term=ipad+pro+2021+price+in+pakistan+11+inch PDF link annotation
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f69969d24---bejepepelakane.pdfIn PDF document text
    • https://auto826.com/uploads/files/84851986344.pdfIn PDF document text
    • http://hcm-invoice.vn/hinhanh_fckeditor/file/17854213251.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/pexelejubeporu.pdfIn PDF document text
    • http://foto-recepty.sk/images/fotky/7312073398.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/24314416681.pdfIn PDF document text
    • http://fapannimario.it/userfiles/files/mejuwe.pdfIn PDF document text
    • http://guss-ex.de/uploads/fck/file/letafojum.pdfIn PDF document text
    • http://www.civilhospitalpalampur.in/img/uploads/files/18556434004.pdfIn PDF document text
    • http://kolaykanal.com/userfiles/files/raruwumilaro.pdfIn PDF document text
    • https://98ing.com/upload/ck/files/20210902_192053.pdfIn PDF document text
    • https://basisnomor.com/contents/files/nitidaf.pdfIn PDF document text
    • https://foodexgida.com/uploads/files/lorusesuriwe.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16135c8ac7262b---98468685811.pdfIn PDF document text
    • http://zensushialiso.com/uploads/files/17152866660.pdfIn PDF document text
    • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/74665993865.pdfIn PDF document text
    • https://www.babetravelling.com/ckfinder/userfiles2/files/53218027961.pdfIn PDF document text
    • https://carpenterstouchnj.supremeroi.com/FCKeditor/file/54264074475.pdfIn PDF document text
    • http://rtm-plus.ru/ckfinder/userfiles/files/69372301586.pdfIn PDF document text
    • http://bbfrontedelmare.com/userfiles/files/13552845027.pdfIn PDF document text
    • http://clubesquilacoma.com/uploads/files/31616251217.pdfIn PDF document text
    • http://basse-normandie.annuaire-regional.com/ckfinder/userfiles/files/kitupimedoripufodo.pdfIn PDF document text
    • https://piti.leaddeehub.com/userfiles/files/52337271107.pdfIn PDF document text
    • http://jvcc.cn/ckfinder/userfiles/files/210905051706240997nyyft.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_off0000d11e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11E 19428 bytes
SHA-256: 58dda8fde83c95978f93fbddf97fc702d82474b7a2d7e73d9db9e092de883a2c
font_01_sfnt_off000103a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BBA 10900 bytes
SHA-256: e71dbaa4680dde5723f08cddc52f9874f407600d3a510cff8969a8e4d27b5f16

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