Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d704396d1d3a5a…

MALICIOUS

PDF

83.6 KB Created: 2021-03-25 17:51:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ae6c90c0b958033189aca85f87db65bf SHA-1: eb4197610ca23cdb3c8847dbb1ca855ce3d94089 SHA-256: 14d704396d1d3a5a61b67ac3d5383979f93b6ba2b039353bd6730459548e1973
126 Risk Score

Malware Insights

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

The PDF contains numerous URLs, with a high-confidence heuristic identifying it as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate 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 0.9993

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://resalured.ru/strik?utm_term=jam+party+bluetooth+speaker+charger PDF link annotation
    • http://podarokinsta24.online/79432619488lylcw.pdfIn PDF document text
    • http://dazenad.iblogger.org/zuboziwujezatit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406454/normal_5ff1c143de98f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495837/normal_5fd0ff783d479.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoletef/jdiaEgh/tenizagovumuzaxaregaliner.pdfIn PDF document text
    • http://copyright-helps-team.com/54851898683sxnj8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410674/normal_6054082d18a8d.pdfIn PDF document text
    • http://leadtop.co/wakipogebuzufibexarix3p4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375342/normal_603995d82b924.pdfIn PDF document text
    • http://xizadewakali.iblogger.org/gazetted_officer_form_for_pan.pdfIn PDF document text
    • http://sport-stavki.fun/petsafe_drinkwell_platinum_pet_fountain_replacement_pumpw1cga.pdfIn PDF document text
    • https://cdn.sqhk.co/muvifisi/cjgghhF/shell_helix_racing_gear_oil_75w-_90.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwasazafu/zMijHgq/lodak.pdfIn PDF document text
    • http://esagafow.fun/kutelimepukvx3t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_5369c4bb35ed4e0096ffcb6faedab30d.pdf?index=trueIn PDF document text
    • https://965bd944-310b-4209-a71a-d16e45aaced4.filesusr.com/ugd/5f02e6_c305b77d6f6a490da58e5cc12bb4dad2.pdf?index=trueIn PDF document text
    • https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_06ee30cb5163439c86b46a53be0bd898.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/ubuntu_16._04_4_lts.pdfIn PDF document text
    • https://84daacc9-7e90-4c5d-b1ed-526950900c49.filesusr.com/ugd/73f3b0_2b8e4c3c43bd4c9590cde24d62229118.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/bogan_tamil_movie_hd_tamilrockers.pdfIn PDF document text
    • http://rabuwojuxuxuna.rf.gd/72059339298.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/osu_aim_training.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/16701534609.pdfIn PDF document text
    • https://4454cc88-256b-48ad-9013-c0414c72072d.filesusr.com/ugd/67e251_de99fa554a3c4728addf7fb8ac1e3637.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/bandhan_bengali_mp4_song.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_off00010845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10845 5644 bytes
SHA-256: 6fe9454f03ea4607d1916ec0a3047980894a5e5294d46acb497c893c604265d0
font_01_sfnt_off00011b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B51 10988 bytes
SHA-256: 75a934f6ceb1e071f9416f93f23bc4a6e6ad9e3eff32ac5c0d656569f858c78a

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