Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b7ed6db2a9a98a…

MALICIOUS

PDF

49.0 KB Created: 2020-09-17 05:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08a00dd478ed31f6d225a37f915c7c4e SHA-1: fba64e949e13963eb6d4db5a077efea24a4281e1 SHA-256: 29b7ed6db2a9a98aea8628375fe3c2f144a4d3c5865d2f91a7d8a5798745b8c0
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to "https://ttraff.club/wix?keyword=pathfinder+adventure+path+pdf". This URL is designed to lure users into clicking it by promising "Pathfinder adventure path pdf" content. The PDF also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/wix?keyword=pathfinder+adventure+path+pdf
    • https://cdn.shopify.com/s/files/1/0428/2908/6876/files/xesenalefifupajo.pdf
    • https://cdn.shopify.com/s/files/1/0439/9503/7854/files/vomegiset.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7384/files/medical_assistant_cover_letter.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9206/files/water_soluble_vitamins_chart.pdf
    • https://70a9ebc6-8283-4030-b1ef-c2cc5d2cd7bb.filesusr.com/ugd/f515ca_e298e1400fdb45c8bb0bc55d5b9f86ff.pdf?index=true
    • https://6318dcab-ebc8-4957-b165-5043f48b4f6a.filesusr.com/ugd/9ef0c3_392ffe89358e4e3582e1774ad38e2395.pdf?index=true
    • https://6328329e-8bbc-453e-8852-9239a6ac1ee1.filesusr.com/ugd/6f9b04_cacce061cfa54488a19fe176b56327ab.pdf?index=true
    • https://8156307e-1066-4ea1-9eed-49dab0e749af.filesusr.com/ugd/8c0e65_f6e544ecda6b4d7ba87cd5e6761d6c70.pdf?index=true
    • https://bd9812b2-d3f8-4f86-8726-544e90934c93.filesusr.com/ugd/eb6612_baf6b08bf0434b16b3af7524bad3ecb7.pdf?index=true
    • https://6d1725da-3258-49e9-9ede-4c5aeceb04fd.filesusr.com/ugd/4fb05f_83f0ef43bb6e4ef3be79daf85b8c95ef.pdf?index=true
    • https://99db348c-2a89-4f04-b4b1-e4e4a90a64a3.filesusr.com/ugd/ea2f88_c74c69ea8c684cb7abb3b19dcc0a2e35.pdf?index=true
    • https://e4f1af16-583f-42a4-b4fe-e6c4d5d8e010.filesusr.com/ugd/c7a620_9613a6c870a947a980e57b9de6f096bb.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0484/4447/3494/files/usda_aphis_ppq_treatment_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2808/files/bread_slicing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3028/files/outline_planning_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/cours_d_autoformation_windev_17.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/1/0438/3267/2418/files/cours_d_autoformation_wi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007624.bin
4ba6a9cb59e29ea060dc2c997e95a21a71b9ad819533d219ca6575d2c38df864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7624 4752 bytes
font_01_sfnt_off00008639.bin
1e7be75187b19ef360ae8b49c2debb8f1506613d28a11bb125c31ac2c8bf3ff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8639 10180 bytes
font_02_sfnt_off0000a919.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA919 4324 bytes

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