Malicious PDF — malware analysis report

Static analysis result for SHA-256 0881968f4e1254cf…

MALICIOUS

PDF

71.2 KB Created: 2021-02-22 17:27:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 02d30a8e47e1835d0640048533c18a9f SHA-1: 4e541f39bfb71f3a20e152c96f6107511304beff SHA-256: 0881968f4e1254cf3696dca91e8c39270ce66fd0985fc814b2a60ed29db6e0f3
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, suggesting it functions as a link farm to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to 'Hi point 9mm safety assembly', likely a lure to attract victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/123?utm_term=hi+point+9mm+safety+assembly PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415331/normal_5fe04f483c329.pdfIn PDF document text
    • https://bobidowi.weebly.com/uploads/1/3/2/7/132740787/kapubesovuzeg_bejeluweratilo.pdfIn PDF document text
    • https://xizonadap.weebly.com/uploads/1/3/5/3/135326441/jegosadunufarir.pdfIn PDF document text
    • https://cdn.sqhk.co/sisalubitot/jjhiZgh/gadulenixidivowenovekefaf.pdfIn PDF document text
    • http://summerita.fun/624157426611kf8b.pdfIn PDF document text
    • https://bejetatibuket.weebly.com/uploads/1/3/5/9/135957672/disedowade_jogid.pdfIn PDF document text
    • http://bestcreditcheck.info/amplified_study_bible_freep0g9v.pdfIn PDF document text
    • https://sujujawajiz.weebly.com/uploads/1/3/5/9/135964945/naribubomuterepota.pdfIn PDF document text
    • https://cdn.sqhk.co/pewovixosafu/gygi1xd/bingo_master_wild_west_bingo_slots.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/h39gdZ7/skin_editor_for_minecraft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465924/normal_60275e1bcbd59.pdfIn PDF document text
    • https://wukavogitebiw.weebly.com/uploads/1/3/5/9/135964288/1410971.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/idPe0cX/lausanne_2020_shop_flon.pdfIn PDF document text
    • https://wejigawavopon.weebly.com/uploads/1/3/4/3/134305277/5155577.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB90 5308 bytes
SHA-256: 4fff082e31b7784a2f081c9f94af722b53db4c9a1cfef0f9b177cfeb0be8d9ac
font_01_sfnt_off0000ed95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED95 10044 bytes
SHA-256: 2992fb24e21e3dd5c200b6c0ec1d5519856077418cc8a43d42847537f070b354

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