Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8b93f208f2b3881…

MALICIOUS

PDF

70.5 KB Created: 2021-02-14 06:21:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3addf80945743db780016980c0a5aba7 SHA-1: a01b7f6a83b0ebb478b6db855a4f2647df0331ed SHA-256: d8b93f208f2b3881a1d53747281a89a64b5e0b0bb8077a47fa7a12c015225f68
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=broadcasting+script+sample+pdf PDF link annotation
    • https://cdn.sqhk.co/dafisuwikib/wmBXhiH/64376804133.pdfIn PDF document text
    • http://tryadasert.online/kaseja5wami.pdfIn PDF document text
    • https://cdn.sqhk.co/feletitami/jehdrjg/farinizalo.pdfIn PDF document text
    • https://cdn.sqhk.co/gitopedevid/cWgd4ih/xoxuberimeforutodadugurem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453747/normal_5ff23996ba8cc.pdfIn PDF document text
    • https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/bogix_piwokapivuxid_wafipe_raxikoxe.pdfIn PDF document text
    • https://kabulemumolitu.weebly.com/uploads/1/3/4/8/134869515/393434c.pdfIn PDF document text
    • https://bonorira.weebly.com/uploads/1/3/5/3/135346760/gizakiretuf_wotukitivavoj_xoluramobekizoz.pdfIn PDF document text
    • http://cccckkkkkdd.space/71649883663w6hko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383692/normal_6014bad051149.pdfIn PDF document text
    • https://buzijivugaza.weebly.com/uploads/1/3/4/7/134709386/libifek.pdfIn PDF document text
    • https://baxiboxizalitif.weebly.com/uploads/1/3/3/9/133987723/zapixixegi.pdfIn PDF document text
    • https://mejotozoferu.weebly.com/uploads/1/3/4/8/134866749/efd051648673.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427811/normal_5fcf35c253362.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408875/normal_5ffb13dd7364e.pdfIn PDF document text
    • http://lyudi23.ru/iron_man_hand_foam_templatesmwgkl.pdfIn PDF document text
    • https://mezovojexojija.weebly.com/uploads/1/3/0/8/130874002/3337503.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/baposivarabuj/brahmanda_nayagan_tamil_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/mulewemijawuj.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/xagozapime.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/d_d_5th_edition_bard_guide.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_off0000d6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E7 5524 bytes
SHA-256: b79646e8f89ad5b3a5af92f869539fe698367910df44aef3c0bd9f1e58f18e52
font_01_sfnt_off0000e99f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99F 10092 bytes
SHA-256: f12133c36340cbb795543ecee8e8374ef953af3a4edd80e5f5d4a7b098077da1

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