Malicious PDF — malware analysis report

Static analysis result for SHA-256 e352fbd6d119e022…

MALICIOUS

PDF

43.4 KB Created: 2020-08-05 15:07:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66c4a49fcd0768f9079af0fa65b3e9c5 SHA-1: f1e6d8c54b0919f6bae072c636474483ca0862ca SHA-256: e352fbd6d119e022047d14ba00cce352e3de42576c0baa6b2efce28d76b9dad5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, includes the primary malicious URL and a seemingly benign topic related to anatomy. The presence of a large number of external PDF links suggests an SEO poisoning or link farm strategy to distribute malicious 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=arteries+and+veins+of+the+lower+limb+pdf
    • http://files.lehrco.com/uploads/1/3/2/3/132303374/bf09bc93b1ab0e3.pdf
    • http://files.eaglepointirrigation.com/uploads/1/3/2/6/132681150/misidalobinilal.pdf
    • http://bemimobur.intibrazil.com/uploads/1/3/0/7/130775169/xunofodatiboxu-zavubu.pdf
    • http://susol.tchanta.com/uploads/1/3/0/7/130775734/rifodivusegijasukudu.pdf
    • http://files.pureandsimplewellness.org/uploads/1/3/1/4/131437953/e718a3f3b241b.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30698029692.pdf
    • https://cdn.shopify.com/s/files/1/0437/9348/1889/files/wuberuxojagawolo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1230/7618/files/cardinalidad_de_conjuntos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/blade_theme_songs.pdf
    • https://cdn.shopify.com/s/files/1/0435/1927/9258/files/sea_lantern_recipe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/ngrok_invalid_host_header.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zumimulapowekulusevenire.pdf
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/kifozax.pdf
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/62846345837.pdf
    • https://cdn.shopify.com/s/files/1/0430/2857/8467/files/auto_repair_manual_on_line.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2711/files/dragon_ball_z_muge.pdf
    • https://cdn.shopify.com/s/files/1/0431/4316/8156/files/64783885876.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_off00006b9d.bin
c160bca0036195d4b3560ddbfe536ed0791b1229af62cb4ee6eb79476ef78afd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9D 5564 bytes
font_01_sfnt_off00007e6d.bin
79d5c13f128d5a9d7c45a2624c12873e0a946a616e13521793a26c57b72b25be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6D 9828 bytes

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