Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a495b7f9ce293ae…

MALICIOUS

PDF

40.2 KB Created: 2020-08-12 00:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 434825098e586d558c2fed1762706eea SHA-1: cb79ab6b2e9f8cbad92e2484d1d6faedc3392f93 SHA-256: 1a495b7f9ce293aecea0a6ad5a44ff61daf6c9edcc69cba2418a06797eba6200
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.ru'. While many linked Shopify URLs are benign, the presence of the malicious redirector and other unknown URLs suggests an attempt to lure users to malicious sites. The document body contains garbled text and a repeated URL, further indicating a malicious intent to obscure the true nature of the links.

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=psychological+theories+of+addiction+pdf
    • http://linubo.jsptacek.com/uploads/1/3/0/8/130814328/sagurileki-malabunopubegen-jozaruluzedob.pdf
    • http://verunudot.pinckneyplayers.com/uploads/1/3/1/8/131871486/tonarebipumig.pdf
    • http://files.harrowphotographer.co.uk/uploads/1/3/2/6/132695288/laminif_vebijufazevesim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/fesijusepufelizajajito.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/55895068592.pdf
    • https://cdn.shopify.com/s/files/1/0431/3337/0529/files/65698775120.pdf
    • https://cdn.shopify.com/s/files/1/0450/2755/7526/files/godrej_aptitude_test_paper.pdf
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/subject_verb_agreement_worksheet_for_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/4419/9848/files/najenoratovusez.pdf
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/xubofakobogopazig.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/82160980577.pdf
    • https://cdn.shopify.com/s/files/1/0431/5283/4711/files/building_materials_short_notes.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/wings_of_fire_book_6_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tivaluzisezulumavolo.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_off00005f21.bin
7fd1d25cce31a56b0c829fb3294b65b6f2b92c2233be6f59bab4361f88bd5b30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F21 5520 bytes
font_01_sfnt_off000071d9.bin
d153a84b627185e2f73029c030586455cb5dd2003505041428825ed889a47336		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D9 10056 bytes

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