Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb13e6b181d6d1b…

MALICIOUS

PDF

37.3 KB Created: 2020-08-28 03:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a2d54e61d9b4758bdb9ce49d15ee6af SHA-1: 97a0ab16d17cf7a7b2d12b591785078dcc8af8fa SHA-256: 0eb13e6b181d6d1b8107ff13b9c58648170252a44eed7d030fa0f5d7059cc3ce
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.club/pify?keyword=gta+vice+city+ggmm+indir'. The document body also contains this URL and other links to PDF files hosted on Shopify, suggesting a link farm or phishing attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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://ttraff.club/pify?keyword=gta+vice+city+ggmm+indir
    • http://dilofofil.torontopetvet.com/uploads/1/3/1/3/131380729/karitamokuzavuxuxila.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1998/5319/files/xanutufidud.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3493/files/novinigipiwowil.pdf
    • https://cdn.shopify.com/s/files/1/0428/5199/1719/files/dusifoboxepari.pdf
    • https://cdn.shopify.com/s/files/1/0432/7532/1499/files/63169627341.pdf
    • https://cdn.shopify.com/s/files/1/0440/0129/6534/files/farmer_only_dating_apk.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/3_branches_of_government_worksheet_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/69340428135.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053e2.bin
fabea52d2ccbc8553019711ee4f4e0febe462a7f0580592510cd5536edb85435		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E2 5244 bytes
font_01_sfnt_off000065ad.bin
94ed3bed32b01325fa19c515d075d8e2d68ded25b38cdcb5e9f5a76066f12dfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65AD 10392 bytes

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