Malicious PDF — malware analysis report

Static analysis result for SHA-256 8530e64ff1079f05…

MALICIOUS

PDF

152.0 KB Created: 2021-01-25 00:00:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1bc8fc739fc70ede1647ab4af682d0c4 SHA-1: e76f6aa4bffc5d87524e35059f302efa47d28c16 SHA-256: 8530e64ff1079f05d56a647ee9a0345463651688ce7a510358685abc11a381fa
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are used in a link farm pattern, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=ngos+in+tanzania PDF link annotation
    • http://tufidifegoz.66ghz.com/gademinexututesasogufon.pdfIn PDF document text
    • http://nakrutkavk.site/60_seconds_atomic_adventure_apk_full_version0v3qp.pdfIn PDF document text
    • http://topijakalez.22web.org/mark_sheet_ssc_result_2019.pdfIn PDF document text
    • https://regogugone.weebly.com/uploads/1/3/4/8/134891767/wososag-najoberedu-kabopibefivaka-dofugo.pdfIn PDF document text
    • http://itslm.fun/bird_paradise_bordentown_njs6ari.pdfIn PDF document text
    • https://federadedeladol.weebly.com/uploads/1/3/4/6/134626130/zububeb.pdfIn PDF document text
    • https://katalulipof.weebly.com/uploads/1/3/2/7/132710678/9929c.pdfIn PDF document text
    • https://cdn.sqhk.co/ladesajisama/9hbiecm/16426522176.pdfIn PDF document text
    • https://fujinimozebuxe.weebly.com/uploads/1/3/0/7/130738673/zemozu_fufowo.pdfIn PDF document text
    • https://linepofikoleku.weebly.com/uploads/1/3/4/4/134492010/5e4c76c2caab29e.pdfIn PDF document text
    • http://ccckkkkk.space/knife_flipper_tabxdpx3.pdfIn PDF document text
    • https://muzikalojex.weebly.com/uploads/1/3/4/0/134012647/8073309.pdfIn PDF document text
    • http://axecheat1.xyz/vesunaxodif6npo.pdfIn PDF document text
    • https://nuvosukive.weebly.com/uploads/1/3/4/7/134718285/2537836.pdfIn PDF document text
    • https://narodejezagog.weebly.com/uploads/1/3/3/9/133988416/405341453ba63bf.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/0K3njc3/fudegi.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/jhdjbjd/the_girl_adventure_game_plant.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mejawiwomak/bullying_behaviors_among_us_youth.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/lagu_dsas_dunia_sementara_akhirat_selamanya.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/the_dance_factory_school_of_performing_arts.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20E43 4412 bytes
SHA-256: f46c56a1a3618a3785e06974cada51b2631dc7baccd3a72bc3e46aebecc8f511
font_01_sfnt_off00021d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21D4F 11948 bytes
SHA-256: 0fb458c2734a80bb4c01d3ea27b0223aba84e5a067e0e3baff06d3083c86a7b4
font_02_sfnt_off000244fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x244FC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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