Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce188a8e1877cd4…

MALICIOUS

PDF

79.2 KB Created: 2021-02-18 01:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 417e70002a27179ed07bf4649083a282 SHA-1: 15aaa3ab451ef85fe8cd4b0fa2ce680a4c8b57f2 SHA-256: dce188a8e1877cd430c44441691bc2007607e7651c3c1bb2e396b549b5b12abf
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/123?utm_term=the+girl+with+the+dragon+tattoo+2009+film+locations PDF link annotation
    • https://cdn.sqhk.co/kufiremikaf/jhNzQXc/creepypasta_minecraft_skin_net.pdfIn PDF document text
    • https://xaroduzorosu.weebly.com/uploads/1/3/1/3/131398324/617b203ab3.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/hjhjjjf/wizilinupalasozem.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/TFelggK/zeterezav.pdfIn PDF document text
    • https://jonexizuli.weebly.com/uploads/1/3/4/2/134235370/wakubikididunaxemi.pdfIn PDF document text
    • https://fotekexilinita.weebly.com/uploads/1/3/4/2/134235887/fonobexivulotaj_kazipe_voginefuraneba_biwogaruwiwupi.pdfIn PDF document text
    • https://cdn.sqhk.co/tasiteregixo/ijQAgji/25449034404.pdfIn PDF document text
    • https://tozadifoxu.weebly.com/uploads/1/3/4/9/134904498/riwij.pdfIn PDF document text
    • https://wubepifumemav.weebly.com/uploads/1/3/4/1/134109226/xekedilubexusij.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/jgi72Ct/infinity_war_cast_members.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/lxAggge/wuzenakurejovej.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/aQZuVaG/zombies_royale._io_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/henZvia/35254498354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_600fac93554c0.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/fasomusogapovi/automation_studio_free.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_off0000f33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33B 5908 bytes
SHA-256: 20a76573ae1a70e4e019709030bfc030ae411565d60e1b6bade489a6b511c65e
font_01_sfnt_off00010738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10738 12292 bytes
SHA-256: 8ce99580a0b1bc34cb9235553c57d947171e0eda75f4fae67cf0963e4bcef763