Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2cfa4747a6e5ca2…

MALICIOUS

PDF

44.8 KB Created: 2020-08-05 23:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c66652670ecd7ffcfc6d6dddc2ee412 SHA-1: 46535fcf5163770072d1792a1c32dd4fc2c201b3 SHA-256: a2cfa4747a6e5ca2e2dbb54983769b93a289066401e7908fae24c18de9644f76
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=optimistic+nihilism+pdf'. Additionally, it exhibits a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to obscure malicious intent or distribute content. The document body, though heavily obfuscated, also contains the primary malicious URL, reinforcing the redirection attempt.

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.com/pify?keyword=optimistic+nihilism+pdf
    • http://files.rara-risk.com/uploads/1/3/0/7/130775672/sizidizoguvesor.pdf
    • http://files.fit4lifepilateswellness.com/uploads/1/3/1/3/131384173/pimenowogaxodej.pdf
    • http://files.pickinstick.com/uploads/1/3/1/4/131438539/wisur_tuvapudafun.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/vanilla_wow_skinning_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4780083199.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6048/files/origen_del_idioma_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9507/2673/files/ball_bearing_selection_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/muxegufolijos.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/wepalezudikaropujemuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2873/3352/files/10965278772.pdf
    • https://cdn.shopify.com/s/files/1/0432/2770/9597/files/82495705236.pdf
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/factorio_all_science_blueprint.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/59176028092.pdf
    • https://cdn.shopify.com/s/files/1/0437/7441/0910/files/ribamufevude.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_off00007150.bin
7564b243a32f7dec8118a0018780d1972362d16e2372fd445f8c1455d5dd0204		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7150 5116 bytes
font_01_sfnt_off00008299.bin
8af6b0f8a9cbced47ed51564cebb0a4fd2da05ad1ae0cf93c30b7a496b9a0c75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8299 10364 bytes

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