Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a473123fc739ada…

MALICIOUS

PDF

70.5 KB Created: 2021-02-24 07:26:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9e8bcc6e0b74991c393d53258b321d9f SHA-1: a1be1ea1f87ab811c77cebe8adafa74da4051cdd SHA-256: 8a473123fc739adae95b360a82cadba5198a8e00bf4e76a0be015a042277bad6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=how%20to%20make%20a%20jungle%20habitat PDF link annotation
    • https://cdn.sqhk.co/gabixeme/Bjfa0ht/torque_burnout_tips.pdfIn PDF document text
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/20cc632b7c.pdfIn PDF document text
    • https://cdn.sqhk.co/zubixola/gfbjiM9/vepatikaboretuvuzifaw.pdfIn PDF document text
    • http://agreevudb.rest/polk_audio_psw10_instructions8567a.pdfIn PDF document text
    • http://rewita.fun/260543316829mjm5.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/bihhcig/dragon_ball_z_landscape_wallpaper.pdfIn PDF document text
    • http://watertea.space/tasisesups4l6m.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/bkggphj/95717720443.pdfIn PDF document text
    • https://cdn.sqhk.co/lanuniwa/hahijge/36421199709.pdfIn PDF document text
    • http://zootime.store/sea_shanties_sheet_musicnc6z3.pdfIn PDF document text
    • https://vilifamizebu.weebly.com/uploads/1/3/4/6/134617150/6b029de.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/gfIhitA/drift_zone_truck_simulator_apk.pdfIn PDF document text
    • https://fubalaxusagipun.weebly.com/uploads/1/3/4/1/134108832/zulanisobive-gadunokigexalub-zetetarepimule-zobunis.pdfIn PDF document text
    • http://floradoma.net/wilagumufewajejajifiwjh7vy.pdfIn PDF document text
    • http://cyberghost.store/free_microsoft_publisher_tri_fold_brochure_templates5lybx.pdfIn PDF document text
    • https://jezinuva.weebly.com/uploads/1/3/4/8/134869759/3ff0f6410ce360e.pdfIn PDF document text
    • https://cdn.sqhk.co/bezakebijuk/51hbofa/tomoxebileve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/nuneze.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_off0000d883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD883 5156 bytes
SHA-256: c9c13b0c8f75cd3cabb7550b74db9ba03f05bb092c5568d446b14810e602b177
font_01_sfnt_off0000ea00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA00 10160 bytes
SHA-256: 5b41feaa8442fa31aa30d22243c4cfb1d8c9698fefc59be11f0a4da68430e618

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