Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae6f347b574e054…

MALICIOUS

PDF

42.3 KB Created: 2020-08-18 19:31:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8567479058fd6009f95bf361989987f SHA-1: 2646a02d8b2c9812576c5996225a7c1e25e34e91 SHA-256: eae6f347b574e0547259145c7a81489102b8438e8e6cc46f66c5a4efa2431d95
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic indicates a PDF redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text fragments related to 'best game music android' and references to repair manuals, likely serving as lures to encourage clicks on the numerous embedded URLs. The primary attack pattern involves directing users to potentially malicious external sites.

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=best+game+music+android
    • http://xajewiwid.dapperluq.com/uploads/1/3/0/9/130969536/192689.pdf
    • http://junutajav.westpanguitch.com/uploads/1/3/0/9/130969746/befaxoxevi.pdf
    • http://files.milfordmagic.com/uploads/1/3/0/8/130874115/176992.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/fawexipab.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/58042344448.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0496/files/xararalefilazejapimusa.pdf
    • https://cdn.shopify.com/s/files/1/0437/8014/5313/files/91481655124.pdf
    • https://cdn.shopify.com/s/files/1/0433/5599/6328/files/35975252822.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/vizexavavolowefef.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/ford_ranger_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/17217679607.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76685421079.pdf
    • https://cdn.shopify.com/s/files/1/0432/0804/8808/files/list_of_whole_grains.pdf
    • https://cdn.shopify.com/s/files/1/0430/5721/7693/files/gifidavusezexupowuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3486/8897/files/article_writing_samples.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/78300869346.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_off000067ab.bin
a3340f5840281943c5e2ef65c1ed318a353d03369d0f90804b00ccf0750d115d
pdf-font-stream PDF embedded font (sfnt) at offset 0x67AB 5276 bytes
font_01_sfnt_off0000797d.bin
d366d7f9d0dffbb59be9deb9a247f6412a26c8da12295bbf26ad1b54ef32adc9
pdf-font-stream PDF embedded font (sfnt) at offset 0x797D 10212 bytes