Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8fb035dd6f1a00f…

MALICIOUS

PDF

40.2 KB Created: 2020-07-10 04:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f527a8404f6a8f6baf12db38372904b SHA-1: c0c8ab6db729c71522dea80a6db6f903a22e5096 SHA-256: d8fb035dd6f1a00fcda89353e99e9e5e191cddbe12d6be08b14e10308c29b3d8
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, many of which are part of a link farm designed to manipulate search engine results. One critical heuristic identified a link to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body itself is largely unreadable, but the presence of the redirector URL and the link farm strongly indicate a malicious intent to lure users to external, potentially harmful, 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.cc/wb?keyword=special%20right%20triangles%20worksheet%20#2%20answers
    • http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.pdf
    • http://files.aau-rankings.com/uploads/1/3/2/6/132695839/4219303.pdf
    • http://files.pathways2vitality.org/uploads/1/3/1/3/131398367/d262ce4d6ea.pdf
    • http://files.farmingninja.com/uploads/1/3/1/4/131453268/pumet.pdf
    • http://files.thevillagevoiceschorus.org/uploads/1/3/2/8/132815753/7287705.pdf
    • http://files.marrakechguidedtours.com/uploads/1/3/1/6/131606069/f90d084f3.pdf
    • http://files.jbandersenart.com/uploads/1/3/1/4/131408344/9494649.pdf
    • http://files.blindsail.com/uploads/1/3/0/7/130740090/6ad97895005c87.pdf
    • http://files.sciencetheearth.com/uploads/1/3/1/4/131453198/nunekezabori_fotazinipexubod_kuvadofug_kewilaz.pdf
    • https://wuvivize.files.wordpress.com/2020/06/vezufikimo.pdf
    • https://xarinigeted.files.wordpress.com/2020/06/1940381809.pdf
    • https://datewaxota.files.wordpress.com/2020/06/zewez.pdf
    • https://woninugax.files.wordpress.com/2020/07/53422275708.pdf
    • https://miserowage857454741.files.wordpress.com/2020/06/94025584569.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99397771733.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35535883354.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wijabogose.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jedajuzosefowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pujipipokumamidepuw.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_off00006081.bin
70cb429c1fff0cf17c36ddb7591f7f0e37e16e4e7a72eaca9d3289c653f3c748
pdf-font-stream PDF embedded font (sfnt) at offset 0x6081 5244 bytes
font_01_sfnt_off0000724e.bin
8a09cd8521c2790423cbbdb1338514098a95e6d9b62bb6f61eea6cdeeaf8f683
pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 9780 bytes