Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b6fff278a03283…

MALICIOUS

PDF

79.7 KB Created: 2020-08-04 10:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bf83033b988889470cb06a215ac8290 SHA-1: 59e938c085edd0f37d9f5d93247dd5fef51302b5 SHA-256: c6b6fff278a032833f00b01ba1e7b88d4957fbe12886fc66fb1f9eca32ae68a8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bennett+s+cardiac+arrhythmias+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The primary attack pattern involves luring users to malicious infrastructure.

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=bennett+s+cardiac+arrhythmias+pdf
    • http://files.rosecitythunderbirds.org/uploads/1/3/1/6/131637896/veluwepes.pdf
    • http://files.abidinghopecc.com/uploads/1/3/1/6/131606291/lojogezaj-jivitokipeve-toninaladado.pdf
    • http://files.johnsonsguns.com/uploads/1/3/2/7/132712234/lokoguv.pdf
    • http://files.christianpeco.com/uploads/1/3/2/7/132741476/637bb8b02c.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/67509553968.pdf
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/how_to_do_a_voiceover_on_imovie.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/16679142427.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jezimix.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/photoshop_free_trial_hack.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/94287487073.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/61373247785.pdf
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/pugepiwexilewuxekudanid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewowa.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/84961531462.pdf
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/wewijabovutukexunobi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee2e.bin
e5e92db3507672eab4f5797f495e1f5561d840499ae0dd25fab4d9187bd13228		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2E 5192 bytes
font_01_sfnt_off0000ffaf.bin
594b67b6a0f7e56a9cd647a8ae3d2391cc6269b80ba15b2869079f5d0c6a8ddf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAF 10436 bytes
font_02_sfnt_off0001235d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1235D 4324 bytes

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