Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d188030afa0d72e…

MALICIOUS

PDF

65.0 KB Created: 2020-12-31 10:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0b97f4d1d27d8809b6ccffd4bf4b86f2 SHA-1: 7dcfa8ce308e372a7fd4f8aff65ea1453685763f SHA-256: 8d188030afa0d72ed441ae8b0fc76327a938e6e4cd72a26e577ce866a45cf398
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 ClamAV and an ML classifier. It contains multiple external links, including one to 'traffnew.ru', suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains text related to 'Alien attack team 2' and the authoring application 'wkhtmltopdf', indicating a potential lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffnew.ru/123?utm_term=alien+attack+team+2+full+screen PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450730/normal_5fa2338041d3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5fae7bf912d00.pdfIn PDF document text
    • https://nifufoji.weebly.com/uploads/1/3/4/4/134458522/4877407.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/eea92587.pdfIn PDF document text
    • https://pasezoxe.weebly.com/uploads/1/3/5/3/135347718/gutafelu-debibabome-negiwokodelare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449779/normal_5fe79e74d6b9a.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/316f491b-a24a-4f5e-b0b3-b75dd284e4fd/humpty_dumpty_costume_adults.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd213d8b-8b7d-4abb-9324-b1ac9072becf/55995212749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/908d55a4-73a0-494b-ba20-9bc75e9f70cb/1995_honda_civic_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/980659bb-54f9-4f5c-acdd-49b09443c12e/81528005344.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4337c4c-ff14-4050-a9f0-853d6db673c2/zoxalikiwugi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c038079-b267-4246-95a1-a655dc79308e/safazavosopo.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_off0000bf7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7A 5212 bytes
SHA-256: 7871f32fea67004dd027426e96e7a17e54ade08825df12f63b6a869fe806b564
font_01_sfnt_off0000d128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD128 10784 bytes
SHA-256: 0b99fc89789831efe660827471314793c4bbbdf641f960f592b90c786c142d71

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