Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fbeee0e8b803df1…

MALICIOUS

PDF

63.2 KB Created: 2021-01-06 03:37:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7e82d82d9a0fd33f5720042a2373f793 SHA-1: 9c764f8445fb9f0d34de81de21a28e8d1bcabada SHA-256: 4fbeee0e8b803df12c8bdeb8831e4ce682d2d42dd54794ebcbb3dfb2d6d277f4
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains a large number of external links, indicating a link farm or phishing attempt. The primary malicious URL identified is traffking.ru, which is likely used to redirect users to malicious content or further stages of an attack. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://traffking.ru/aws?utm_term=ek+chumma+song++pagalworld PDF link annotation
    • https://votujejigep.weebly.com/uploads/1/3/1/3/131380583/wekekafu.pdfIn PDF document text
    • https://cdn.sqhk.co/rozopebak/8ifk4hg/rocket_launcher_fortnite_location.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/ghiibgc/mabogivebenuloxoxokarazi.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/z9vmKjf/dragon_quest_9_vocation_base_stats.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/iejcVgz/car_operating_cost_calculator_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/jajiwif/wunozisujobem.pdfIn PDF document text
    • https://cdn.sqhk.co/jemajujo/jd7igrn/ralphs_weekly_ad_preview_page.pdfIn PDF document text
    • https://cdn.sqhk.co/jamolipa/cDjhtjf/josazigapule.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/09ybqPI/91518271547.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/33b80b92-c1ce-4a03-9ecc-64f0d277ba2e/kipikiniwuvewidamuxed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b35ebd7-400b-4673-a9fe-35d30f1f7473/sewuwepafunenalako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ea7b3ba-85d5-41d0-a036-2ec1ca9361dc/4625481886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d7f5fa0-beb2-4e08-a3d9-a73abd30e02e/carrier_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/cours_d_algorithme_exercices_corrigs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e813e602-ef99-4d48-b5aa-61887f9e0ea5/protective_combat_uniform_visual_user_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_off0000ba2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA2E 5600 bytes
SHA-256: 62de591a8b06183e7e75e9aabb95e0e3934f346075b6acbbb5c36d1962938e10
font_01_sfnt_off0000cd24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD24 10284 bytes
SHA-256: 0f9871f2aca4cf8f37b2fcaeaa89b38a9f4fe8b263f6cf54577b83ac3f846263

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