Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1084ed86897a931…

MALICIOUS

PDF

41.4 KB Created: 2020-08-21 14:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c16ed9f39143551be59872e69e559b3 SHA-1: c5a143f0b4647679c0ecad3efe6d5bc9e06771e4 SHA-256: d1084ed86897a931538464e5dbd1faa4355c42c7a7b80208902f26432434f8fc
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=10+facts+against+school+uniforms, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL and other links to Shopify, suggesting a lure to a malicious payload disguised as a document. No scripts were extracted, limiting further analysis of the payload delivery mechanism.

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/pify?keyword=10+facts+against+school+uniforms
    • http://beman.lachlanbest3d.com/uploads/1/3/1/4/131438316/lumojuxi.pdf
    • http://files.wvrra.org/uploads/1/3/1/4/131406390/wexirubo_besuka.pdf
    • http://files.virginiagraynovels.com/uploads/1/3/1/4/131483147/1344150.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/38192342172.pdf
    • https://cdn.shopify.com/s/files/1/0436/0758/9027/files/dictionary_english_to_tamil_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/bukafaxupuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/kikexarafagoxumo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62856854762.pdf
    • https://cdn.shopify.com/s/files/1/0435/0210/8836/files/adoramus_te_domine_taize.pdf
    • https://cdn.shopify.com/s/files/1/0437/5629/0206/files/minizefujevu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/bobapitefudofarajavafan.pdf
    • https://cdn.shopify.com/s/files/1/0431/6010/9210/files/safenefejimupunovevezugut.pdf
    • https://cdn.shopify.com/s/files/1/0432/4032/5282/files/2677416440.pdf
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/49941835262.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_off000064ae.bin
d3c3c0a453cf5ee230aa1b37d39b6fdcf331ae55ee054cd3fa836a01bf2ccfa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 5396 bytes
font_01_sfnt_off000076cf.bin
4fdea06444e559c88735fb31de2d8d13c1ea86a9ea991a280ae62c6e5ef52b0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76CF 10020 bytes

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