Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1a083280ec3ddb…

MALICIOUS

PDF

71.6 KB Created: 2021-03-11 21:04:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 962b04ba5438713745a4f18e63bc81d0 SHA-1: f0ee8b1c287f25ac2105b459a132582b4d8db7a2 SHA-256: fa1a083280ec3ddbfd1658182e22e14b824a997b7daffd4b2d3c872094ba853d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 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://baarspo.ru/award?keyword=problem+solving+101+pdf+bahasa+indonesia PDF link annotation
    • https://xuxefakeni.weebly.com/uploads/1/3/4/2/134234722/pebebo.pdfIn PDF document text
    • https://gepogujewo.weebly.com/uploads/1/3/1/3/131382217/4566662.pdfIn PDF document text
    • https://paxuxitusokewu.weebly.com/uploads/1/3/1/3/131380341/420826.pdfIn PDF document text
    • https://bagamijak.weebly.com/uploads/1/3/1/3/131380043/4482947.pdfIn PDF document text
    • http://sbrf.link/pirenitjue6p.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/gdhgJhj/lubojolodo.pdfIn PDF document text
    • http://kivudutamazawan.22web.org/kajojesobud.pdfIn PDF document text
    • http://lusivemewuza.22web.org/merrybet_old_mobile_platform_login.pdfIn PDF document text
    • https://betirowi.weebly.com/uploads/1/3/4/6/134661799/xaduredodazozip.pdfIn PDF document text
    • https://zafojepomekosax.weebly.com/uploads/1/3/4/3/134352399/89e196cd7a3fd.pdfIn PDF document text
    • http://yellownatural.space/what_is_in_fire_and_ice_condomsg44r8.pdfIn PDF document text
    • https://mimevomakiket.weebly.com/uploads/1/3/4/6/134693464/zifuvifuporepor.pdfIn PDF document text
    • https://zabuxowinuj.weebly.com/uploads/1/3/4/8/134874463/kabubuzuzubot.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/6WRHDtJ/mezuxosifosuseb.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/rVmihie/ordinal_vs_nominal_scale.pdfIn PDF document text
    • https://famonusowofem.weebly.com/uploads/1/3/4/3/134349488/1735986.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7be8961d-effb-4c78-a255-78c3c9f0be09.filesusr.com/ugd/3dd68e_08fd089ecf9344909cd317fa2c9ce1c4.pdf?index=trueIn PDF document text
    • http://nipuxedexup.epizy.com/68204363241.pdfIn PDF document text
    • https://e082b6be-64c0-45f6-a8ff-82b9c6f476f0.filesusr.com/ugd/1479de_f8907d3ef9a84fe1a16259dcf7e63820.pdf?index=trueIn PDF document text
    • http://levuras.epizy.com/bowflex_m5_max_trainer_cost.pdfIn PDF document text
    • https://989244f3-426d-4557-b4f1-0018dac9047c.filesusr.com/ugd/57c819_59d1a8e19a23444eb05c3386d58d222e.pdf?index=trueIn PDF document text
    • https://cf336f9a-6a79-4542-9269-5b62d6eb69dd.filesusr.com/ugd/1daf83_b2b680ea02044965afab1eec956a5e54.pdf?index=trueIn PDF document text
    • http://difoduniba.epizy.com/bob_revolution_stroller_double_used.pdfIn PDF document text
    • https://4f870d4f-701c-4ec6-bbb3-7277acc5528a.filesusr.com/ugd/fdcb8d_0017637a3f3948dc9d4416ba429c5fc6.pdf?index=trueIn 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_off0000d7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DA 5852 bytes
SHA-256: a3c6c503c6a062a99cfcc2b7e062d43693dcb3f9b924468758e7c522eb10e9de
font_01_sfnt_off0000eba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA3 10836 bytes
SHA-256: 1814dd0f2fd3b39903a04d954d2dc04a3808bee5bb04aef20ce965303d78a24b

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