Malicious PDF — malware analysis report

Static analysis result for SHA-256 7495ee3f09d00653…

MALICIOUS

PDF

45.3 KB Created: 2020-08-06 01:26:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ebf2743a4df4a4eb95e2e994e9f9ccf SHA-1: c9da36b06c3a405fabbfbaea47dca137e80d849b SHA-256: 7495ee3f09d006538dbacad239531a6250afe2545c9b57c9f66c5e5bd5215803
154 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which is a common tactic for distributing malware or phishing pages. The heuristic firings indicate the PDF is designed as a link farm, with many links pointing to other PDFs, likely for SEO manipulation or to host malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=fixture+of+asia+cup+2020+pdf, which is flagged as a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=fixture+of+asia+cup+2020+pdf
    • http://files.craftsisters.com/uploads/1/3/2/6/132695915/2191836.pdf
    • http://files.moneimadwan.com/uploads/1/3/0/9/130969247/gujun_sedilomidun.pdf
    • http://files.frontierfamilyfarms.com/uploads/1/3/1/4/131453902/7249391.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/wixeboribukijo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/bovogufabidesin.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/tewafexujalozo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/rufetazurobazax.pdf
    • https://cdn.shopify.com/s/files/1/0439/1193/8216/files/18445392979.pdf
    • https://cdn.shopify.com/s/files/1/0440/1935/1710/files/fotenozekir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7189/files/98938402984.pdf
    • https://cdn.shopify.com/s/files/1/0428/6539/3820/files/22035621090.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4181/files/14666756471.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006520.bin
f1a4816231f681d9421843538c553c77d43b064a98eaa4812c5e56bec8c887c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6520 5192 bytes
font_01_sfnt_off000076e4.bin
eb87fb48bc9e5c0c01e135651e6b38a4e7acaa2839279f15f8eab3a67b235508		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 10248 bytes
font_02_sfnt_off000099d3.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99D3 4324 bytes

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