Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2c3f9a3faa2952…

MALICIOUS

PDF

84.1 KB Created: 2021-05-04 07:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f2721857160595283137a41ee096cd06 SHA-1: 2ecfd89d39b167093d6d64f5ae846cdb8b5dbd07 SHA-256: be2c3f9a3faa295250078f176d69b1a9fb1f6aaf37f250b541276e67df64f404
184 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including critical alerts for malicious redirector links and ML classification. It contains numerous links to disposable domains, with one specifically pointing to a redirector infrastructure. The presence of embedded URLs and the overall structure suggest an attempt to lure users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=ruger+p95dc+safety In PDF document text
    • http://kalukoroduro.mygamesonline.org/31633875422.pdfIn PDF document text
    • https://cdn.sqhk.co/pewesopefim/jbjjNgi/allegiant_stadium_seating_chart_view.pdfIn PDF document text
    • http://xisumagogali.getenjoyment.net/apollo_munich_optima_restore_reimbursement_claim_form.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/zN7hYjf/zugeluz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475715/normal_602143db9b53d.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/ihifPgh/tuziteviz.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/81536415272.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvesanap/hheifbI/xilefubofegose.pdfIn PDF document text
    • http://bometaximom.scienceontheweb.net/48888032825.pdfIn PDF document text
    • https://cdn.sqhk.co/rodisukipi/jaqkggE/94249058271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381976/normal_5fda7efe2fc8d.pdfIn PDF document text
    • http://kofodotig.sportsontheweb.net/lisuki.pdfIn PDF document text
    • http://bufezipuduxev.mywebcommunity.org/wto_agreement_on_agriculture.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466146/normal_604e15e799e1f.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/kozewuposoridil/bsc_online_registration_form_gujarat_university.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ada08fdf-a062-4fa4-b1c6-8ffcecd89813/mutolebadebogelemu.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/bareilly_ki_barfi_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/tascam_dr-05_solid_state_recorder.pdfIn PDF document text
    • http://jitawidavez.atwebpages.com/on_the_apostolic_preaching.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6725f1dc-c007-4413-bb23-e088d05d6060/60103539537.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_off0001096a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096A 5680 bytes
SHA-256: 88ce3ffb0721bad5008d262a2612f573ea3e3c3eef2013a581500e30bab4e5ad
font_01_sfnt_off00011ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CEB 11248 bytes
SHA-256: a5ceecbac0486b84b08687a994081e9fad1b1d208e4eea78f4ae00873fa9aaac

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