Malicious PDF — malware analysis report

Static analysis result for SHA-256 e345306442b1d8d1…

MALICIOUS

PDF

72.4 KB Created: 2021-03-01 13:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c145a1328dde21a502e6fd346904b144 SHA-1: 4c80da783750a459a36e974e5817e5e6dfe8291f SHA-256: e345306442b1d8d12d47371709b55c8ba51e8f12a34bef58d35c866b940eb118
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/award?keyword=build+shooting+target+stand PDF link annotation
    • https://rifewageza.weebly.com/uploads/1/3/5/3/135349229/majopu.pdfIn PDF document text
    • https://gogovujogizog.weebly.com/uploads/1/3/1/6/131607278/5165552.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/bggcji0/triple_diamond_slot_machine_jackpot.pdfIn PDF document text
    • https://bosamekuxukis.weebly.com/uploads/1/3/4/6/134672370/1605e.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/iaIT9hb/gojefijijowoluxofepexeku.pdfIn PDF document text
    • https://cdn.sqhk.co/buzusodova/ahiotK8/dragon_quest_viii_3ds_ps2_differences.pdfIn PDF document text
    • http://tihefers.online/22599984921vc1nl.pdfIn PDF document text
    • http://obmenkalnr.online/574604533gdukz.pdfIn PDF document text
    • https://cdn.sqhk.co/nekuripafi/jhiHgcM/nanomamexebutixavoxu.pdfIn PDF document text
    • https://cdn.sqhk.co/zugivakizo/iegj3vn/how_much_does_smithsonian_channel_plus_cost.pdfIn PDF document text
    • http://fitokaps.xyz/gidinapuzuzabulel74uua.pdfIn PDF document text
    • http://wbigs.space/ribobozas0vbiz.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/sirilagewuga/42373390275.pdfIn PDF document text
    • http://kizuxaw.rf.gd/electric_guitar_riffs_tabs_for_beginners.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_off0000df9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9E 5136 bytes
SHA-256: f2482d766e60c975748fdc05726113bc97d6fce9d0153474a869aeeb81706569
font_01_sfnt_off0000f10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10A 10380 bytes
SHA-256: 4753c99f45e2d428e92a49e7852bec0551df6d7e149d339c560b27ee69a22238