Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e465af9d706db69…

MALICIOUS

PDF

79.9 KB Created: 2020-11-23 11:10:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 093339621f182f55ff4e959d454d3a0e SHA-1: 985e2845aa1f481c2721fa84dfcf20f6a47229ae SHA-256: 0e465af9d706db6908ad454cd8616f58215d822662cb6b86596e5e51aab96c11
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm designed to direct users to other sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing or trojan delivery. While no scripts were explicitly extracted, the PDF structure and link farm behavior suggest it's designed to redirect users to malicious content or download further payloads.

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 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://trafffi.ru/123?utm_term=essentials+of+statistics+6th+edition+pdf+free PDF link annotation
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/8731271.pdfIn PDF document text
    • https://birebojutadavom.weebly.com/uploads/1/3/4/3/134342015/a80a8ac740bf37.pdfIn PDF document text
    • https://vifedunujaxali.weebly.com/uploads/1/3/4/3/134398483/texuwomupuzi.pdfIn PDF document text
    • https://fidesafova.weebly.com/uploads/1/3/4/8/134876701/kasem_mexarokizatit.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/231a92c0-9d3b-43e8-bff7-41b6a73b4032/guess_song_quiz_artist_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/what_is_smartpost_fedex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ecba3ba-f36a-4034-9584-a76b964797fe/24110258763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0495735-b1b0-4ff8-9ccd-4befb539b242/bunex.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/lookup_function_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/12365210840.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/xukasoxakik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0dfb2fe-c910-47c7-b860-deea2a58f3e5/nfpa_54_2012.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF796 5356 bytes
SHA-256: 93ab08206f5db94d4199ada1d076553baa2bef14448b9dc9954f4757bb83ef75
font_01_sfnt_off000109c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109C6 12704 bytes
SHA-256: 1553c5232ad246b1925031b734e5805e7ba64abcebf5a1a4a931e74aaed905f0

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