Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5912c687eb23fe…

MALICIOUS

PDF

67.9 KB Created: 2021-03-01 01:44:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 09a7c755fd14870173c3d2cc73de7085 SHA-1: 42f62cf421cf744f31bf73b9a1d5181240ebaa29 SHA-256: 7c5912c687eb23fe366c40be658288e88aa30140abebdae86eb036b369c0b2af
126 Risk Score

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://maypoin.ru/award?keyword=sears+radial+arm+saw+prices PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387060/normal_602923bce6324.pdfIn PDF document text
    • http://domensita.fun/adhd_treatment_guidelines_adultsbrz42.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/13929489662.pdfIn PDF document text
    • https://cdn.sqhk.co/dufukeraj/jbshfje/98374466541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412584/normal_5fd674d5e72db.pdfIn PDF document text
    • http://eurofamily.pro/frigidaire_mini_fridge_retro_pinkzxrzt.pdfIn PDF document text
    • http://sawedes.mywebcommunity.org/bafiludesuwoxepat.pdfIn PDF document text
    • http://help-verifiedbadgecenter.com/6610464962188i15.pdfIn PDF document text
    • https://cdn.sqhk.co/lasetipulos/fn9Irib/56771075058.pdfIn PDF document text
    • http://tobufupevujuma.mygamesonline.org/jumpsuit_pattern_womens.pdfIn PDF document text
    • http://kobivoweder.mypressonline.com/zozisarizunewoxolulokasow.pdfIn PDF document text
    • http://kurixuj.sportsontheweb.net/59833729531.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409411/normal_60381474f2a3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403540/normal_602faf9133356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477387/normal_60205a3764cdf.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/presto_pressure_canning_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/guzelatolina/ZaAECgc/surfing_masters_margaret_river.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/4jaLQjj/dinoland_play_center_target.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/voluxumozosedudejuwo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gosaduzunake.myartsonline.com/13763687467.pdfIn PDF document text
    • http://mifojizu.myartsonline.com/2_digit_subtraction_with_and_without_regrouping_worksheets_2nd_grade.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_off0000cef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF6 5412 bytes
SHA-256: a01f09082c6cc079e7344e149de470e7c902653e718a154d57ece2562e60d825
font_01_sfnt_off0000e158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE158 9732 bytes
SHA-256: 423dbf4cfc053249980e548b8e5d335a91c29fa2ba9fbc8d5ec9fe9bbb5e73f7

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