Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3dbe95e504dddbe…

MALICIOUS

PDF

40.3 KB Created: 2020-08-03 06:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 923276d7317aef73550999610ae346d9 SHA-1: 36d0cbeac412345a85e4bb6bdb83f943e26efbef SHA-256: f3dbe95e504dddbe28296691832ceed3211a14e20f5531ac0ee8df9187e8f05f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=immotor%20go%20user%20manual'. This link is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation or to obscure the final malicious destination. No scripts were extracted from this sample.

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/wb?keyword=immotor%20go%20user%20manual
    • http://files.oregonbiomedicalassociation.org/uploads/1/3/0/7/130775509/rupulidedima-kovalonefazuza.pdf
    • http://files.lisawarns.com/uploads/1/3/0/9/130969430/zilokagonodil.pdf
    • http://files.purpleinkpublishing.com/uploads/1/3/1/4/131437844/mikofoxaxomojope.pdf
    • http://files.hisinscriptions.com/uploads/1/3/1/0/131070934/lojobibomigo.pdf
    • http://files.beautymarkz.shop/uploads/1/3/0/7/130740205/e07ea5.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/nuwujo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1533/8144/files/21151969005.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/leroniza.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/best_in_slot_hunter_classic.pdf
    • https://cdn.shopify.com/s/files/1/0434/2821/6997/files/91385269392.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8694/files/bandit_gang_marco_bonnie_and_clyde_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9493/3665/files/wefozinukunudipar.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/96729271118.pdf
    • https://cdn.shopify.com/s/files/1/0431/0918/7750/files/sovisamugalavifetufesiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/71819665450.pdf
    • https://cdn.shopify.com/s/files/1/0435/8671/5805/files/67888344853.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_off00006145.bin
d73b0a6b25b9a936b18ac0d0219cfc28367bd7763e9bdae855a2659196a06850
pdf-font-stream PDF embedded font (sfnt) at offset 0x6145 4944 bytes
font_01_sfnt_off000071fc.bin
711d52ac4dfc0a293aa693a90fe30821c52603ce5233f22e655ddf04cfdace8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x71FC 10064 bytes