Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96aae79904ce195…

MALICIOUS

PDF

72.6 KB Created: 2021-03-05 17:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4849c188915d0c14b92bd08f1a63a5e3 SHA-1: c6ec00333e3f534e0350b12b1e96ac441c7ef884 SHA-256: b96aae79904ce19561fe2f0ec187d3e1300663cb0c0df1ab52d8224b91a0db8a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=document+service+center+guyana PDF link annotation
    • http://tupaxeguna.scienceontheweb.net/uc_riverside_sat_scores_2019.pdfIn PDF document text
    • http://vojupobakovax.iblogger.org/lean_manufacturing_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/fudikeraz/aEjbohe/buttercream_frosting_wedding_cake_designs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461202/normal_5fd2611be26e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383160/normal_5fce459e0f210.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/4hhifZV/74705997725.pdfIn PDF document text
    • http://madokedaxemosu.22web.org/spherical_harmonic_function_matlab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378618/normal_5ffb380b6596d.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/7329584623.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391602/normal_5fdb2c44719de.pdfIn PDF document text
    • http://mozujana.22web.org/robot_0._2_link.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvitatutuv/hevgfRQ/merufalujepunetejareka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_6009d9fb2af09.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fobegagefim.epizy.com/power_thoughts_joyce_meyer_quotes.pdfIn PDF document text
    • http://matogojetize.rf.gd/9632107715.pdfIn PDF document text
    • http://xoxadexol.rf.gd/segobevebajagobatuguxu.pdfIn PDF document text
    • http://sajekitix.rf.gd/tafosusasimixo.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9A 5248 bytes
SHA-256: 2087e53828eefa398cf6f629bfbbb892aae00970d08fb7d12f9424d8254e7242
font_01_sfnt_off0000f174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF174 10624 bytes
SHA-256: 2060d17a750a2ca408e77227ebea2c4cf6478b4a2e77ebe552cdc86020945a27