Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac5096369fa97d2f…

MALICIOUS

PDF

47.4 KB Created: 2020-08-27 22:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84e3e6eee6b2258ba0c2210bd9b91d5c SHA-1: e4b90cbc0b3ec53757e722f2d572a31d3dc6a56b SHA-256: ac5096369fa97d2f757b31801543f5bec2bc78cd43f0cfec435f0ea94517ff45
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate content, likely to deceive users into clicking through to malicious sites. The primary malicious URL identified is https://ttraff.cc/pify?keyword=capitulos+completos+del+se%25C3%25B1or+de+los+cielos, which is flagged as a malicious redirector. The document body, though heavily corrupted, contains text referencing 'Capitulos completos del se 1or de los cielos' and includes the malicious URL, reinforcing the lure. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to mask malicious activity within a large volume of seemingly benign content.

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.cc/pify?keyword=capitulos+completos+del+se%25C3%25B1or+de+los+cielos
    • http://files.kokopelliu.org/uploads/1/3/1/4/131438405/783326.pdf
    • http://files.overwatchwargaming.com/uploads/1/3/1/3/131380043/9670166.pdf
    • http://files.tfsillygood.com/uploads/1/3/0/7/130775786/d851e.pdf
    • http://jorosef.anti-agingbyrjxjelly.com/uploads/1/3/2/3/132303354/8686563.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/chalean_extreme_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/kenmore_dishwasher_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/diwom.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/79173443730.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7808/files/puxevotenolisofepe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2891/files/animals_coloring_page.pdf
    • https://cdn.shopify.com/s/files/1/0428/6483/6764/files/ropogipozije.pdf
    • https://cdn.shopify.com/s/files/1/0428/2908/6876/files/anlise_sinttica_aplicada.pdf
    • https://cdn.shopify.com/s/files/1/0432/0968/7208/files/vajafamoxexawofafare.pdf
    • https://cdn.shopify.com/s/files/1/0432/1578/2045/files/facebook_ads_guidelines_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/9145/1294/files/gekutalivorosupikumi.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_off00007887.bin
e72eea2c54df7e6e3234b024c066870372b8e3ceb65ae8930ddb4a9893391ecc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7887 5336 bytes
font_01_sfnt_off00008a4e.bin
f2552084d14926db5a7f1638b6f1a10ab8710d3e3ab9c44a43ce72eeb5e4d11e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4E 11060 bytes