Malicious PDF — malware analysis report

Static analysis result for SHA-256 622874e1be7e3233…

MALICIOUS

PDF

72.2 KB Created: 2021-02-15 01:32:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fd13e871222a4724b444dfeb1deae486 SHA-1: e4736a964b933aa564c4419ce76a275330673e14 SHA-256: 622874e1be7e323362b7a803b618a411f61b78c9dc8c08efdd28212f08b122a8
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://jottigo.ru/123?utm_term=long+e+sound+words+with+ie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417658/normal_6017cf9c3b171.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/gehjhgF/55418523757.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369165/normal_5fca3c0c9008e.pdfIn PDF document text
    • https://nesefutuderixu.weebly.com/uploads/1/3/2/7/132740375/1946835.pdfIn PDF document text
    • https://zelerajolames.weebly.com/uploads/1/3/0/7/130776056/gijobaloji_muwugopororota.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/ZhbAYqR/bird_paradise_flower_cost.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465924/normal_6025e5a34e253.pdfIn PDF document text
    • https://wipemaxo.weebly.com/uploads/1/3/5/3/135345075/8c54ffeb8a890.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvinudubuno/iggfSgf/fx_sound_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/hje2PKj/32846232570.pdfIn PDF document text
    • https://cdn.sqhk.co/tefebenum/iaRDjeP/download_king_of_kung_fu_fight_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/jgfibjg/89171996069.pdfIn PDF document text
    • https://vavaterojitenoj.weebly.com/uploads/1/3/4/8/134898986/249df93c75c167.pdfIn PDF document text
    • https://vadopesi.weebly.com/uploads/1/3/0/7/130738994/gafopesujexufet.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/iiVTib1/bat_messenger_download.pdfIn PDF document text
    • https://dupagerenukuxat.weebly.com/uploads/1/3/4/7/134751723/2093607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453560/normal_6012337822c8d.pdfIn PDF document text
    • https://nuvutujozexavu.weebly.com/uploads/1/3/4/1/134131277/towiti_suxunigipi_dofininuzisid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5E 4880 bytes
SHA-256: 08c221f9695e36849705a345b8ff7c384005609deae3a2fdfd048dd48d3dfeaf
font_01_sfnt_off0000eb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0A 11776 bytes
SHA-256: 469c5023a5bfe5846ca87517ad8e9878381d096a6104e7ba952d0b271f82b8b3

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