Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f00e68d7baa729…

MALICIOUS

PDF

52.5 KB Created: 2020-08-06 15:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01029af9abe5e5e3463532295ae838bc SHA-1: 6affa6fe453bc89197a83a5cf7b0a526ba715706 SHA-256: 42f00e68d7baa7298847fb54b87cc435846e871d4e792c2aa7187270f006b390
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a manual for a Behringer Europower EP4000. This indicates a phishing or scam attempt. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to increase visibility. The ML classifier strongly flagged this PDF as malicious.

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/pify?keyword=behringer+europower+ep4000+manual+pdf
    • http://files.pstransport.net/uploads/1/3/1/4/131453114/jefuzonadela.pdf
    • http://files.bewellmindset.net/uploads/1/3/0/8/130814308/tenizizunipo-bilasusi-riwotab-geborumo.pdf
    • http://files.kallenakucers.com/uploads/1/3/1/4/131483955/rofabasimiro_bofariju_vituwajitiv_tapodexim.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/lego_hogwarts_castle_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/36572826347.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1268/files/55846796203.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8077/files/94565635393.pdf
    • https://cdn.shopify.com/s/files/1/0434/8136/6693/files/40555660900.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/doom_2_master_levels_wad.pdf
    • https://cdn.shopify.com/s/files/1/0438/7245/2776/files/xixazudomidaxiramewik.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/javascript_string_foreach.pdf
    • https://cdn.shopify.com/s/files/1/0448/5994/9218/files/git_clone_to_current_directory.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/65756371106.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5509/files/destination_c1_c2_malcolm_mann.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/lawiwapij.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_off00008d1b.bin
a00b505b4d355df21c604bb6a92488848025ef9451ffa78f0e349f5c841708f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1B 5648 bytes
font_01_sfnt_off0000a04d.bin
2443aad3fd3c734346438702720721e19ca510f736d14d18581893ad4e972865		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA04D 10640 bytes

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