Malicious PDF — malware analysis report

Static analysis result for SHA-256 876f3c59b06621d7…

MALICIOUS

PDF

71.3 KB Created: 2021-02-18 11:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d5a0deaca2662fcb3ef749030a50776c SHA-1: 8fd26d80beda659164239467e58c36968b99e72f SHA-256: 876f3c59b06621d7ce501fbb5a3fb4ee243c7f5b9eb6cd9de4b1c3429e373063
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://bologen.ru/wix?keyword=pharrell+williams+neck+tattoo+removal PDF link annotation
    • https://cdn.sqhk.co/lisupixiwe/btajgTU/97147216597.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459796/normal_5fcbf24fba1bd.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/6VpLFih/zokotixolubogeliwuwevig.pdfIn PDF document text
    • https://cdn.sqhk.co/botuvawezej/Zdie4kX/nipiwenuzukijavav.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/6yjjJF5/5268351359.pdfIn PDF document text
    • https://jimurapixow.weebly.com/uploads/1/3/5/3/135399705/jizimasefupiro.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/dV7b7Lj/77438876203.pdfIn PDF document text
    • https://cdn.sqhk.co/dakuwuwuzije/gehhhgj/remuxuwemowebiwamilize.pdfIn PDF document text
    • https://cdn.sqhk.co/savaketiju/dHihfif/hide_from_zombies_online_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/icfYgj1/warship_legend_idle_captain_mod_apk.pdfIn PDF document text
    • https://mufixedak.weebly.com/uploads/1/3/4/6/134602267/luxobuta.pdfIn PDF document text
    • https://cdn.sqhk.co/zaborofisi/jRhaEgc/senebi.pdfIn PDF document text
    • https://dobetabuzaduguz.weebly.com/uploads/1/3/5/3/135312815/dowusifow.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/jLxSGii/music_business_plan_template_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/ggguheY/lijoredujufigugotavodefu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tunifowu.epizy.com/4_times_tables_practise_sheet.pdfIn PDF document text
    • http://ludodugadigepez.rf.gd/nutritional_labelling_guidelines_uk.pdfIn PDF document text
    • http://piperopire.rf.gd/adderall_and_alcohol_yahoo_answers.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_off0000db18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB18 5256 bytes
SHA-256: ad782ae4c27fd21acea36500628ad0d8d990ff5e1b4a7ae62acfc50f61a7c92f
font_01_sfnt_off0000ece2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE2 10120 bytes
SHA-256: 5717d112f3a1bc695b493b098cbf213e41fee7ea8adfb526c5ed8809ace53771

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