Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6131f156e34729d…

MALICIOUS

PDF

57.9 KB Created: 2020-08-22 18:23:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c417f8114019324a92ab7f79733bf801 SHA-1: a07126cf324a08147aeb1735f665af5eb186d209 SHA-256: a6131f156e34729d74a3c713339764b82c2b2f85b2bfb5ab2b4e878b7d260230
150 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 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic, reinforcing 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=all+quiet+on+the+western+front+pdf
    • http://jisukaji.acozydeal.com/uploads/1/3/1/4/131453119/dusezuzaxe.pdf
    • http://vafula.celebrationinmykitchen.com/uploads/1/3/1/4/131407408/takuvurerunasiwukiw.pdf
    • http://files.aclickawaytraining.com/uploads/1/3/1/6/131606758/5449aeeaf06.pdf
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/guwamawutoverumonizugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ledoviz.pdf
    • https://cdn.shopify.com/s/files/1/0435/8701/0715/files/13249740396.pdf
    • https://cdn.shopify.com/s/files/1/0433/7483/7925/files/68292193816.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/imagenes_para_colorear_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0429/9728/5027/files/nivopewewisufobuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/31361362048.pdf
    • https://cdn.shopify.com/s/files/1/0431/9097/6673/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/64054189745.pdf
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/fomelafanunu.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_off0000a5cb.bin
604adf3aef403f417e7be446713d87449d513cd8789e008107c4e32316bad5e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5CB 5124 bytes
font_01_sfnt_off0000b744.bin
2ce6969eaf15d9d62c43778f65ddf08ed4ad9e41d31a9edf309a5c4e9c5aa8d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB744 10376 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.