Malicious PDF — malware analysis report

Static analysis result for SHA-256 3343660280c92fe6…

MALICIOUS

PDF

49.6 KB Created: 2020-12-13 21:51:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d253e8e49c3e5b9f8f202ce1121cd15b SHA-1: 2cb8a29aeb6aec847b6c48145eb70e84c4191f9e SHA-256: 3343660280c92fe62bd8138f336528a17cf3ef2710e7c247a7b5c8adc76b94a1
212 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with at least two identified as malicious redirectors or part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8125

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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.
  • 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://gettraff.ru/strik?utm_term=electron+configuration+pogil+answers In PDF document text
    • https://femekeviwafuga.weebly.com/uploads/1/3/4/3/134345727/pezikenexi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc66ebfbda9c57a97e41709/t/5fcd9758978da30c56181797/1607309146009/preppers_discount_store.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/gevafudomafubabexaluxonu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1701a3dfdd95b60d8e131/t/5fc5d9c061e25426e102b4e1/1606801857364/social_security_office_locations_san_mateo_ca.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fceeb561c15f507d7680ad6/t/5fd6669496ed101a3e410e0f/1607886486022/street_fighter_apk_obb_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0672f60f2895dc1e54ab2/t/5fc20d4dcb3e0f5771973313/1606552911485/peliculas_de_adam_sandler_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/41870290113.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59635085bf90c0e1cfcff/t/5fc7154e1d689b68bf938b18/1606882640331/zurigodubidovanegebemud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb67f37c-0483-4632-a721-dda3765d97e8/53160409050.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/loxiwajesibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce52ce3a-b51f-460e-8b8c-4db700f25789/house_tree_person_interpretation.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc007006609fd0ee78c7004/t/5fc0ddf018e72e5fdbf79134/1606475248893/71368967759.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/fumezurakupokatafapugo.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000abfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABFA 5232 bytes
SHA-256: ca5a08cd76c8ffb7828f98de4975504531530a2c13bb539c1c781624af32f5bd

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