Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d27da206d4a2e2e…

MALICIOUS

PDF

35.8 KB Created: 2020-08-25 09:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b63c58b4314269d5b68fac4df8a32cb SHA-1: 37cdeed5315280d28228927273554ca6e92984ba SHA-256: 3d27da206d4a2e2e19066c5343ba46e2b742658a434c4d5c8615bcd023d07aa3
120 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a trailer for 'Assassin's Creed Unity'. This link, 'https://ttraff.com/pify?keyword=assassin%2527+s+creed+unity+trailer', leads to a link farm hosted on cdn.shopify.com, which is a common technique for distributing malicious content or for SEO spam. The document body, though heavily corrupted, contains the lure text and the malicious URL.

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.com/pify?keyword=assassin%2527+s+creed+unity+trailer
    • http://files.squareonegoodsco.com/uploads/1/3/2/8/132815154/tasawaz.pdf
    • http://files.bloomfieldscamp.com/uploads/1/3/1/6/131607565/xawebovaminog-geberibegamedus.pdf
    • https://cdn.shopify.com/s/files/1/0433/6487/6444/files/english_syllable_rules.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/fivaxititemete.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/should_and_shouldn_t_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/53216872712.pdf
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/segokirufexevudofaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/5377/7047/files/80252463515.pdf
    • https://cdn.shopify.com/s/files/1/0458/0048/9126/files/sentences_and_fragments_worksheets_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/coordinate_plane_picture_worksheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/vigegipa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6677/6991/files/physical_geography_objective_questions_and_answers.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_off00004e4b.bin
3b42092f0b6d480d1d8d7ae53cb91546cc62dc114cf9e76a367f3730677df28b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4B 5060 bytes
font_01_sfnt_off00005f8c.bin
d3bc42e23f6006f2259afe72c1908572e8363ab8ab56be8905bdef7c60ad1f82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8C 10356 bytes

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