Malicious PDF — malware analysis report

Static analysis result for SHA-256 674f56534b17ba19…

MALICIOUS

PDF

68.8 KB Created: 2021-02-13 20:22:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 052dc666d469c7cb2c11a3323ab4a92b SHA-1: 398350100af7517354ce2b2459a6227bab5d6128 SHA-256: 674f56534b17ba19813103cf9210810f7c442863e88241957cfbd3fc19be594f
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/aws?utm_term=app+cloner+mod+apk+1.+4.+19 PDF link annotation
    • https://zapunetiregete.weebly.com/uploads/1/3/5/9/135956705/9365628.pdfIn PDF document text
    • https://fasukawoj.weebly.com/uploads/1/3/1/4/131453618/2d620.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414335/normal_6018781fbcbce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496582/normal_5fd02fc4206a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366045/normal_5fe42ad561eac.pdfIn PDF document text
    • https://fotavimapuwe.weebly.com/uploads/1/3/2/8/132816041/forimatomofipuz-somonidefex-jabizizepodivaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386621/normal_6023ba3e01a1d.pdfIn PDF document text
    • http://lady-bug.club/relabowupilcb4p0.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/acknowledgements_template_dissertationptdfq.pdfIn PDF document text
    • http://matroskin.space/puzzle_8_challenge_crossmatics_answersfqptb.pdfIn PDF document text
    • http://xojitufos.66ghz.com/yellowknife_tourism_guide.pdfIn PDF document text
    • http://cheapkeys.site/hybridization_of_i3khyx2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447497/normal_601ee3b7ae61b.pdfIn PDF document text
    • https://buseziji.weebly.com/uploads/1/3/1/3/131398529/1450035.pdfIn PDF document text
    • https://sovufejado.weebly.com/uploads/1/3/0/7/130740048/9341455.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_off0000d19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19D 5424 bytes
SHA-256: 00c79e1e0411b519983df67be72b7b6124235b37e41705f54bedad7fa0bc3744
font_01_sfnt_off0000e40c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40C 10188 bytes
SHA-256: 07b882aecf80095bd454dc7b641df52d5e836ef80938ed62114631af3d6ac706