Malicious PDF — malware analysis report

Static analysis result for SHA-256 44c1ac8cc3706ce9…

MALICIOUS

PDF

67.6 KB Created: 2021-02-15 11:28:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1bbcd41ea276733ebb4293b0d5912c17 SHA-1: 91364a0dfc5b14df37446d4e72e75770b15db64e SHA-256: 44c1ac8cc3706ce9ddd4c7977c687a02786004f300922fbb0c2c6a2948c60ec5
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://jacksth.ru/wb?keyword=how%20to%20thread%20a%20bobbin%20on%20a%20singer%20machine PDF link annotation
    • https://vemekejafor.weebly.com/uploads/1/3/4/0/134012611/5487c572167.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/cRuhcje/shawn_mendes-_songs_offline_40_songs_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zatugudaxaji/fhhG8ja/grist_mill_inn_hope_nj.pdfIn PDF document text
    • https://nonaxoboru.weebly.com/uploads/1/3/4/4/134467623/weximaroriros.pdfIn PDF document text
    • http://livecopyrightverification.com/berliner_platz_1_neu_answers8xs4s.pdfIn PDF document text
    • http://luminar3-download.xyz/raxudeguniijcf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469645/normal_60240fbf83282.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486200/normal_5fef667d97f60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491688/normal_6026df9b29d32.pdfIn PDF document text
    • http://nashremont.site/gofujun4gpl9.pdfIn PDF document text
    • http://domensita.fun/bernette_730_sewing_machine_manual0i9xo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuxibuzejapise.epizy.com/63810692200.pdfIn PDF document text
    • http://firixafuzive.rf.gd/bollywood_songs_latest_hits_free.pdfIn PDF document text
    • http://jasigobup.epizy.com/36273372499.pdfIn PDF document text
    • http://selafaveso.rf.gd/ludikazabugagatoradikod.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_off0000cc06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC06 5516 bytes
SHA-256: c4aa4b2f8c0f42a33910c470300fde993cfb2a83348d2b1d90842a5051058573
font_01_sfnt_off0000dea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA7 10216 bytes
SHA-256: 425a1a6b5ac43f4b5ac2b380a50eda4c340d770a21a9e504eea0dbbdf54b9198