Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0d090bdad422c0…

MALICIOUS

PDF

76.8 KB Created: 2021-04-09 20:21:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e5d45000b5863002097c7eb0ff3be05 SHA-1: d63249496a6c324cd8afbb57a907d7dca5c9611f SHA-256: 6f0d090bdad422c0f789be7f4cde9f643ec5e090b4ce802b7a1b40d8405480ad
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded links, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, suggests a lure related to a 'State of decay weapon specialization guide', likely intended to trick users into visiting malicious URLs. No scripts were extracted, but the PDF structure and link farm heuristic indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 http://seiary.com/sites/default/files/webform/rec/pexutagizoniged.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/subeditanutojodojewogize.pdf
    • https://www.jwico.com/sites/default/files/webform/vuvosiritixulufanili.pdf
    • https://extranet.blanchisserie-toulousaine-de-sante.com/sites/extranet.blanchisserie-toulousaine-de-sante.com/files/documents/justificatifs/29410319198.pdf
    • http://www.pacificsportfraservalley.com/sites/default/files/webform/zajufofagobixipisuna.pdf
    • http://www.grotekeukens.be/sites/default/files/webform/gmawards2018/41850888982.pdf
    • http://www.friendlycc.com/sites/default/files/webform/16921441106.pdf
    • https://aboss.by/sites/default/files/webform/31226501773.pdf
    • http://www.sumnercountyhospital.org/sites/default/files/webform/vetasitumuwogemukuruv.pdf
    • https://web.liderpapel.com/sites/default/files/webform/53484808665.pdf
    • https://www.blplegal.com/sites/default/files/webform/54305505708.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/dakorudi.pdf
    • http://spotlight-sites.com/sites/default/files/webform/razodogodipuvubetixem.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/80411930416.pdf
    • https://aboss.by/sites/default/files/webform/32639212941.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=state+of+decay+weapon+specialization+guide
    • https://community.princeton.edu/system/files/webform/tujuxegagisezemesolut.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0a7.bin
d124fc4b919c7e5ef6c9096c4a277bb4217884eb187019dd5e1c915c495cc2ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A7 5456 bytes
font_01_sfnt_off0000f364.bin
897d3abaf23187ffb5d4cb19c072bec3f7602ec99440023040da265ba8263265		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF364 10680 bytes
font_02_sfnt_off000117e4.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117E4 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.