Malicious PDF — malware analysis report

Static analysis result for SHA-256 e384da3772326545…

MALICIOUS

PDF

50.9 KB Created: 2020-08-16 21:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d4d76df746cc2e462b145f37f3bc81f SHA-1: c8d5af57b48ec0f9767293614fe4925c5714e7ee SHA-256: e384da3772326545928b86d9d8badeb4e0bed8a8d5470dc4246a99204cd6803c
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a redirector URL, indicating a phishing or scam attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the link to 'ttraff.cc' as malicious. The document body, though partially corrupted, contains the same text as the malicious URL's keyword parameter, suggesting the link is the primary lure. No scripts were extracted, but the PDF structure and embedded links are sufficient to determine the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=controlled+radical+polymerization+guide+aldrich
    • http://files.coachrickdarlington.com/uploads/1/3/1/8/131856188/zodoxivova.pdf
    • http://files.roofglo.com/uploads/1/3/2/6/132681985/puvijinewitisodemi.pdf
    • http://files.whitecoatantidote.org/uploads/1/3/0/7/130775427/2635755.pdf
    • http://files.sandandwater02020.com/uploads/1/3/1/3/131383934/4358203.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/84237762426.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/felaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/1457/6537/files/29887909556.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7248/files/80746163028.pdf
    • https://cdn.shopify.com/s/files/1/0431/3356/7125/files/judiroluzigowo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/16919185351.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/24903949350.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/eviriyle_ren_zer_kiraz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8172/7129/files/gesiniwebulavufajopu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/editing_host_file_windows_10.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/
    • https://cdn.shopify.com/s/files/1/0429/5085/2

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000087fa.bin
4d84d2216a50210ae37e9aec7be11416b459cc54676412e412b81219c99539fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87FA 5368 bytes
font_01_sfnt_off00009a18.bin
b95c602c1dfd9be9973e1971221d8d7936be6ecc6cc7e1e52ce51966e9a15c82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A18 10864 bytes

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