Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead0c89559f12e4a…

MALICIOUS

PDF

48.9 KB Created: 2020-08-05 08:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bd0e8003c5bd0dd89daec010da4425b SHA-1: 37f5c33de21b4c1909b016e0ce52f9c362def7eb SHA-256: ead0c89559f12e4afb2109b6f7925365625f12cd3004ab05fd044e15e1951167
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=account+equation+pdf'. This indicates a phishing or scam attempt, leveraging a link farm to distribute malicious content. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack vector. No scripts were extracted, limiting the analysis of further payload execution.

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=account+equation+pdf
    • http://files.brianpatrickgodfrey.com/uploads/1/3/2/6/132681482/gaxumegoku.pdf
    • http://files.drawingonmusic.com/uploads/1/3/1/0/131070044/mupesibudunug-womexezaluzo.pdf
    • http://files.lisawbwalker.com/uploads/1/3/1/6/131636935/xakozomexop.pdf
    • http://files.miaouofficials.com/uploads/1/3/1/8/131856353/pimozerefog.pdf
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/12336755962.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/30555699303.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/48518840402.pdf
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/levaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/zezabumerujimulidov.pdf
    • https://cdn.shopify.com/s/files/1/0434/1268/4967/files/custom_social_sharing_buttons.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/navunewopazo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/how_to_keep_sketch_trial_working.pdf
    • https://cdn.shopify.com/s/files/1/0432/3852/3047/files/single_line_text_art.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vekedexixerokasadoboma.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/51747372253.pdf
    • https://cdn.shopify.com/s/files/1/0439/4693/4430/files/21484577151.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/
    • https://cdn.shopify.com/s/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a77.bin
42505288003ca5e5a9424d251fc5c89e6f98ff2c04c6988db2262e1557f8b0a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A77 4960 bytes
font_01_sfnt_off00008b75.bin
737609ddf3720f4c55cb252dd3089df6bb820721950893acaa845aec3749e3a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B75 13696 bytes

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