Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f02750cd6e0d819…

MALICIOUS

PDF

39.5 KB Created: 2020-07-29 12:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0379f115f786edd6cccf78972e06963a SHA-1: fa4c16228486b8293e2ab1d66c63d265797e97e6 SHA-256: 2f02750cd6e0d8190c8b75c9f5a3e4ea4341076cc51b257b0b54cbc3c73871fe
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'manual auriculoterapia pdf gratis', suggesting a lure for users searching for such content. The presence of a large number of external PDF links, many hosted on Shopify, points towards an SEO link farm strategy to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=manual+auriculoterapia+pdf+gratis
    • http://files.sainthelensboutique.com/uploads/1/3/2/6/132695352/mapubus.pdf
    • http://files.recollectiveway.org/uploads/1/3/1/8/131871416/bujilowewes.pdf
    • http://files.livingconscious.net/uploads/1/3/2/8/132815181/zajodadapidegorulid.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/bonawoxuzunaza.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/gakilozazadig.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/47191138394.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/tajiwepogiwag.pdf
    • https://cdn.shopify.com/s/files/1/0433/3145/3081/files/37107129376.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/41220826115.pdf
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/devipejanusojib.pdf
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/49332148199.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/76038283035.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/koxeworas.pdf
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/51610979150.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_off00005de7.bin
97092b406b6bc255ac0d8a8ecf9079745db4c79f5158143cd490ee9b39bd3c80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE7 5212 bytes
font_01_sfnt_off00006fac.bin
3f5934f2d59ec597479d5bfb42461ed6a0fb8cec68620a7b793128c9533b4eef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAC 9912 bytes

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