Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a9e8662a05a5ee…

MALICIOUS

PDF

80.7 KB Created: 2021-03-20 19:54:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b08d93f02f127c67d3deaa63d021611e SHA-1: 4febdd5712cab7ce9d8af1411e0685b2c486650f SHA-256: 34a9e8662a05a5eeee849bfc5968cb2d0d235a199af8b7e8e577aa94b7b9aa66
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a primary focus on directing users to `https://dugedepap.ru/award?keyword=jeevan+shanti+850+pdf`. Heuristics indicate this PDF is part of a link farm on disposable hosting, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dugedepap.ru/award?keyword=jeevan+shanti+850+pdf PDF link annotation
    • https://petirinupupa.weebly.com/uploads/1/3/1/4/131438611/97ffced4a3341.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_60279bb84481b.pdfIn PDF document text
    • http://fodefon.getenjoyment.net/what_is_xanadu_in_kubla_khan.pdfIn PDF document text
    • https://juvuxoxeziw.weebly.com/uploads/1/3/4/3/134313380/bifatepon.pdfIn PDF document text
    • https://satewode.weebly.com/uploads/1/3/1/4/131407014/dagolom.pdfIn PDF document text
    • https://voteriboxovoviv.weebly.com/uploads/1/3/4/3/134352377/mijirepobarixag.pdfIn PDF document text
    • https://rusajilema.weebly.com/uploads/1/3/4/8/134853265/4cef4.pdfIn PDF document text
    • https://pekafajifazudo.weebly.com/uploads/1/3/4/4/134478446/4940040.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371248/normal_5fec182dec012.pdfIn PDF document text
    • http://rixanemusijod.mywebcommunity.org/a_pragmatic_guide_to_business_process_modelling.pdfIn PDF document text
    • https://kewojuposadut.weebly.com/uploads/1/3/4/3/134374438/kulaliveduj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445864/normal_6019d3fc1bd2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388285/normal_5fefe6bfdc2a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390659/normal_5ffa755be0b27.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/82145330353.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/foroxiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pisonepegosa.myartsonline.com/dd_3.5_druid_handbook.pdfIn PDF document text
    • http://luregaw.onlinewebshop.net/margites_homero.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/wibokukekumalupepisoxap.pdfIn PDF document text
    • http://dolinoko.atwebpages.com/5018886802.pdfIn PDF document text
    • http://punexowimuseva.epizy.com/guxededojajebajuvajanuf.pdfIn PDF document text
    • http://sanikivatuma.rf.gd/blank_space_song.pdfIn PDF document text
    • http://lekirajadu.epizy.com/kilibetokuxudixo.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_off0000fc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4E 5512 bytes
SHA-256: 62f51fd07be4ff7f0da8fbfd59055af8b8f9b02dd71f9349907c4c21ced63885
font_01_sfnt_off00010f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F17 11492 bytes
SHA-256: 1f640bdc804735c457d442a8c32835b29990b672332c24dcc8dd2e1e4376be49

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