Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb07f4412efb08a…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 20:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc5dfaca480bb5d62008c98e690c5b15 SHA-1: 8c83c34d0cd149be68b6fc998b4b2dd814b3d037 SHA-256: aeb07f4412efb08ae73118cfad311ba61b547e52d07b876e178d4fa097666bf3
160 Risk Score

Malware Insights

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

The PDF contains a lure for cracked software, specifically 'Bigasoft video converter crack', and includes numerous embedded links. One critical heuristic indicates a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=bigasoft+video+converter+crack'. Another heuristic identifies a PDF link farm, with many links hosted on cdn.shopify.com, some of which are confirmed benign but others are unknown. The document body also contains text related to remote support tools, suggesting a potential secondary lure or a broader social engineering tactic. The presence of a malicious redirector and the overall structure strongly suggest a phishing or malware distribution attempt.

Heuristics 4

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=bigasoft+video+converter+crack
    • http://files.straymongrel.com/uploads/1/3/1/8/131871894/4cc60b638a0f8e.pdf
    • http://files.bryncraigpaintings.com/uploads/1/3/2/6/132695492/13184f8e5687.pdf
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/69231758311.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/juxaxejusaguzufexatix.pdf
    • https://cdn.shopify.com/s/files/1/0436/0057/6669/files/7987953000.pdf
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/13285639133.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/richard_bandler_libros_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0440/5726/4280/files/rumelol.pdf
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/juxedifupopofiburi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/anbe_peranbu_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/28857036285.pdf
    • https://cdn.shopify.com/s/files/1/0439/4500/1115/files/69528945875.pdf
    • https://cdn.shopify.com/s/files/1/0434/5826/5238/files/bebuzuzarolemezeka.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.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_off00005edb.bin
5a78fcb98dabf015d61c0a477ff5e489a9113041de532de52b7615fe1ae8f26a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDB 5328 bytes
font_01_sfnt_off00007117.bin
59b38358d9d1aff17edee6e7773bc5ce465330ed0add596fdd65a7cbf2db8627
pdf-font-stream PDF embedded font (sfnt) at offset 0x7117 10772 bytes