Malicious PDF — malware analysis report

Static analysis result for SHA-256 f43b8702f8686a7a…

MALICIOUS

PDF

69.1 KB Created: 2021-02-16 23:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4f340b4059a820b852ee5314943d4f59 SHA-1: ed27199fd258ab6ffad2ff6c74019c3b1aa6c5de SHA-256: f43b8702f8686a7a7092f6422d9863250e2e88f04f6c5f064877b60afab6e2b7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/aws?utm_term=synonyms+and+antonyms+worksheet+5th+grade+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376120/normal_601b7d4e5e94e.pdfIn PDF document text
    • https://bafuzonexive.weebly.com/uploads/1/3/0/7/130739369/demuwosev-megozavejowawo-zukasos.pdfIn PDF document text
    • http://bonifacy.site/88600772608rp6qx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488581/normal_5ff7d9e345c90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498992/normal_5ff3af790fa78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454045/normal_600ee68a58548.pdfIn PDF document text
    • http://stroy-level.ru/84975499420bay2.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/jgihehc/gambar_monkey_d_luffy_gear_5.pdfIn PDF document text
    • http://sushibara.net/vasepapepabulq64z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443810/normal_5ff94249739ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390663/normal_60171a9c8d142.pdfIn PDF document text
    • https://cdn.sqhk.co/napefabet/gg6Ywic/battlelands_royale_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5feaf10027190.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/hfif7hd/cross-_stitch_patterns_free.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/vefagotoje/berkshire_swash._ttf.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_off0000cdb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB9 5908 bytes
SHA-256: c3782d2bc15a2530ead5cc7998d519c295870b6bb565b37cbaae42a48b5fb279
font_01_sfnt_off0000e1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C5 11048 bytes
SHA-256: 8792fa634d1afc687c2f235aa23f37580f954c43f978e6bfc3dfbd3dda0addbc