Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7d1d76ccd35f37…

MALICIOUS

PDF

70.4 KB Created: 2021-02-25 18:57:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 21039e9ad00c1098ff274e4ad47a438e SHA-1: 352356c08a75048590e67bcadf630e505c84a019 SHA-256: ff7d1d76ccd35f377192889f6391d369c52ce0b79a4451fa33d556da8dae0551
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/award?keyword=amelia+bedelia+means+business+ar+quiz PDF link annotation
    • https://lupemofuxuxutuj.weebly.com/uploads/1/3/1/3/131383332/9789428.pdfIn PDF document text
    • https://cdn.sqhk.co/buzodafevuj/fidOjg0/streets_of_rage_classic_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374715/normal_5fdd5f2f78cbf.pdfIn PDF document text
    • http://wupulij.22web.org/aluminum_sheet_metal_roll_forming.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/gfje1ih/basketball_champions_league_team_budgets.pdfIn PDF document text
    • https://cdn.sqhk.co/buxisinuji/bgceiir/jisutobefozafafimivoxusi.pdfIn PDF document text
    • https://cdn.sqhk.co/fezusife/Gb0ijgs/zizilomawawatituxuzo.pdfIn PDF document text
    • https://pukelubaluwo.weebly.com/uploads/1/3/4/7/134741361/d16a5.pdfIn PDF document text
    • https://roxilegetewus.weebly.com/uploads/1/3/4/7/134721251/3891255.pdfIn PDF document text
    • http://jezojarugeboz.22web.org/uc_browser_apk_android_4._4._2.pdfIn PDF document text
    • https://kolagigeb.weebly.com/uploads/1/3/2/7/132741023/65f87168a.pdfIn PDF document text
    • https://xuzipitazejaj.weebly.com/uploads/1/3/4/7/134722028/221deaa40dee7f4.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/iiFrggV/stickman_marathon_race_superhero_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://demumerip.rf.gd/iaaf_full_form.pdfIn PDF document text
    • http://karuriletepet.epizy.com/dalopebujevef.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_off0000d70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70E 5276 bytes
SHA-256: d4ddbe369cd395762e6f44469d697842bfa85d920075c806813cd748398ad111
font_01_sfnt_off0000e8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DA 10436 bytes
SHA-256: 8b55cd45cd4c2cf4fa930bb8b7d8c893362c8bb0e9ab9d3cecbad0d5647983ef