Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8b32e65e967598…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 07:21:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b22fcf7c97d56c4cc8a0b67d13f8677f SHA-1: 6e175032a7e48880b2c1d8d972e206a89e8bc52e SHA-256: 7f8b32e65e967598e62df5e1189a41ca1342822eed56a039c68eb202cbd0ff2e
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/123?utm_term=silence+of+the+lambs+original+book+cover PDF link annotation
    • https://cdn.sqhk.co/dibitarebizu/riiciiS/mowojakenevadozas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379487/normal_6031c16ac5afc.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxolusufa/hjignN5/weatherbug_ludowici_ga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486197/normal_603824874af51.pdfIn PDF document text
    • http://busimaderule.mywebcommunity.org/96978351492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462681/normal_60344c48df7e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://relaweki.rf.gd/108_amman_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/88115236280.pdfIn PDF document text
    • http://meridupomosim.epizy.com/16878795412.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/xinaxobafilarudo.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/breaker_panel_directory_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/86587350334.pdfIn PDF document text
    • http://tixerewolulas.rf.gd/itemised_quote_template.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/jomixafaguralop.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/articulate_storyline_tutorials_for_beginners.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_off0000deda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDA 5664 bytes
SHA-256: eb17601a34f9222b5173a9fcd2e40655882e2c89c5339d1d8215018b4fa6c896
font_01_sfnt_off0000f1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F9 10600 bytes
SHA-256: 13358241aa2ac259c03afe89913bd24e7ad3a27c311c94b24ff9a7c7af461888