Malicious PDF — malware analysis report

Static analysis result for SHA-256 5979d0ba86949ed1…

MALICIOUS

PDF

31.8 KB Created: 2020-08-01 20:26:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5378e7c3356d084ba74e93612f0c9e41 SHA-1: e7c6114985a71029a724443203eae6dd08492f05 SHA-256: 5979d0ba86949ed1b24e4c3c7ea683eaef5eec57b03edcab2801c764acb3d46e
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, masquerading as a Dyson vacuum cleaner manual. One of these links, 'https://ttraff.ru/pify?keyword=dyson+dc41+manual', points to a known malicious redirector. The document's structure and the presence of numerous links suggest a link farm or SEO poisoning tactic to distribute malicious content.

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=dyson+dc41+manual
    • http://files.stingrayentertainment.net/uploads/1/3/0/7/130776031/9341767.pdf
    • http://files.jeffreydienerphotography.com/uploads/1/3/0/7/130740011/lelolem.pdf
    • http://files.thecornerdrugstore.ca/uploads/1/3/1/4/131453284/wedikamezumega.pdf
    • http://files.massretreats.org/uploads/1/3/1/4/131453060/jukuvitefepalebafoka.pdf
    • https://cdn.shopify.com/s/files/1/0436/2996/9561/files/97042814170.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53940391871.pdf
    • https://cdn.shopify.com/s/files/1/0437/6041/8970/files/xusovadodexelaropizo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8986/1535/files/9070834202.pdf
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/ziritudivanabedabifoduxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/14482680314.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1096/files/witeduvixudomotumef.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/71257393793.pdf
    • https://cdn.shopify.com/s/files/1/0430/9558/9013/files/vedisaga.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/7835538692.pdf
    • https://cdn.shopify.com/s/files/1/0436/1319/2349/files/34467376189.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_off00004256.bin
1cf467ee96b8eb3bbc845310a3ba594da590ec3a8fa95c5e332b5e88c4e0adea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4256 5228 bytes
font_01_sfnt_off00005428.bin
9d01b6a8d329f6ec01e2729c1df5babec8c2813562e9d37e87e9255da2bc5c64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5428 9060 bytes

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