Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5af739736dc8ea1…

MALICIOUS

PDF

41.2 KB Created: 2020-08-02 22:38:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d082d4426b1cdb7e8fe3eaa09c1c63d SHA-1: 1956410e7197223b7be096693b98cf45ea9ef7eb SHA-256: b5af739736dc8ea1dc0848175e4fb1f5342a0ffce0f6fb5d577b53ea4f3ed0c3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body also contains the same URL, presented as a lure for 'Games hacking tools for android'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for obfuscation or to appear benign. No scripts were extracted, and the PDF structure itself does not indicate further malicious activity beyond the redirection.

Heuristics 3

  • 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://ttraff.ru/pify?keyword=games+hacking+tools+for+android
    • http://files.somadharma.com/uploads/1/3/0/8/130813357/wakovo.pdf
    • http://files.mikerossdesigner.com/uploads/1/3/0/9/130969322/lopadejupokiwik.pdf
    • http://files.4lazydogsofsugarhall.com/uploads/1/3/2/6/132681586/gunigugu_fofewu_wofag.pdf
    • http://files.expandedhealing.com/uploads/1/3/1/6/131606727/9297777.pdf
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/bezaguwivukexan.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/34039775749.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0101/files/fibaxerajirive.pdf
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/mabeladiwopex.pdf
    • https://cdn.shopify.com/s/files/1/0433/8388/1893/files/xutemerazigoxavuloxogopi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/brewmaster_monk_stat_priority.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/retoxotolipukopa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5067/2033/files/81383554187.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/popizumotidawesep.pdf
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/lanupo.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000630e.bin
f36c31a2c77bb1c01e1e91e92e581411c5b276b6dfad37f45d23fd7ce2390746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 5528 bytes
font_01_sfnt_off000075b3.bin
f9b2048444223ae342784c89b1fe5cedd642f4fbe3641c7a9d51df4d2dc01d4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B3 10076 bytes

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