Malicious PDF — malware analysis report

Static analysis result for SHA-256 e346843d165f2e7d…

MALICIOUS

PDF

72.9 KB Created: 2020-12-20 22:24:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 67f029a012074e893e714d2b1e138f14 SHA-1: d0db19166262f0ab51e841d937a9bec6279934ba SHA-256: e346843d165f2e7d95d8b4a027919f5f57acc7fa97c3a0e25a0f6dcb20b78fe4
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing document and hosts a large number of external links, one of which is a suspicious URL related to a game mod download. The ML classifier and ClamAV also flagged this file as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect 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-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://trafffe.ru/strik?utm_term=clash+of+clans+update+mod+apk PDF link annotation
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/87313b0f4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470836/normal_5fad5a078080c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ea3cefed-49ab-458f-855e-791d20984e93/kogowufuzi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6139f81c9a2a0c99e150/1606377800818/general_psychology_multiple_choice_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f874a737-c0ea-4897-b61d-f754bab539fb/wonibajexufisavojaxiwap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa3c4f33-ef17-4582-adbf-ac4f4fccfd3b/29473586126.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6cb2f3de5e49b55cfb10/1606380723074/miwifoxosalijavenusazibo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a10c10d6a92a736d2eaf/t/5fd7418ae5ac5828963daf90/1607942538540/mopexoridesofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a0aa509-1f15-4c41-aba3-2da380f7ae25/90605312572.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2ed17e7202640ea1bf0/t/5fc137f57acac6192aed0bad/1606498293789/how_to_cancel_a_payment_on_paypal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a6c66e2-f572-4e29-b0f1-ac7a90f3bd91/niro_kia_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f6b9bf8-a231-4336-a6cb-00951e035c40/ao_haru_ride_live_action_actor.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC90C 5220 bytes
SHA-256: a472fe269d1be3ab865417bb83fa6745754d69b4242d3deed6d941d9539f784f
font_01_sfnt_off0000daa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA8 15384 bytes
SHA-256: ad85a99f51d9ed608fc8a5f6cfdef1ed20aa9da01f86fa89a7fd57daadda6d1d
font_02_sfnt_off000108d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D8 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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