Malicious PDF — malware analysis report

Static analysis result for SHA-256 500ab9b744032e6e…

MALICIOUS

PDF

33.8 KB Created: 2020-08-29 13:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a143bcc267c6a2c628409b90833d2a60 SHA-1: 8f03a3521efa92b153158a3f3eea2956c886a0b2 SHA-256: 500ab9b744032e6e9894abdb0b6fb8b92c3d4a4d041ff99381ac4a892d5bdfc1
150 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.ru', identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDFs hosted on 'static.usrfiles.com', suggesting a link farm or SEO poisoning tactic. The ML classifier and heuristic firings strongly indicate malicious intent, likely to redirect users to harmful content.

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.ru/wix?keyword=law+of+attraction+abraham+hicks+free+pdf
    • https://static.usrfiles.com/ugd/b8c837_1e9a9968972a4ab38b058861676c5577.pdf
    • https://static.usrfiles.com/ugd/b8c837_49f7236672a14310a7dd6c0d8eb3a75f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b141bc19f86a429baf8c81e42b40d6e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_625f1e9486dd47de80e94b4c554aced1.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d5a2dd33e8f4870ade6ce14afcca3b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab7e646ad1c64a66bb9fcb67025c7c7a.pdf
    • https://static.usrfiles.com/ugd/8c2aca_811a13b58435413ebc581856f5b2bdb6.pdf
    • https://static.usrfiles.com/ugd/b8c837_adbeaf83cda6478c97d63ead09e9c5b8.pdf
    • https://cdn.shopify.com/s/files/1/0440/2947/7014/files/flash_tattoo_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/8891/1267/files/28029636716.pdf
    • https://cdn.shopify.com/s/files/1/0440/9756/8920/files/learn_english_by_songs.pdf
    • https://cdn.shopify.com/s/files/1/0437/6369/5770/files/civic_education_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/lujuvuzeme.pdf
    • https://cdn.shopify.com/s/files/1/0458/9748/2394/files/adobe_acrobat_pro_11._0.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/funariveliteju.pdf
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/lewafojuwuga.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_off00004859.bin
9e86d1ba35c0015a86269d7b011c08311c0af9f7b443841ddbd6f0ee6111f473		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4859 5600 bytes
font_01_sfnt_off00005b41.bin
c8c8419b40d48392e98d825e8dbac2879b4689877cf655b7a684f1850988e3ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B41 9060 bytes

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