Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6e12ba67dad0f1…

MALICIOUS

PDF

74.0 KB Created: 2020-08-13 17:31:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a69fc6853a85d3fadd80f1350b0cddff SHA-1: 8f284bbaf598308f816e3f4e8f8d026f82ae014d SHA-256: 2b6e12ba67dad0f18a1258414dddcdbe8a08a1333dff73da638d40ca4cca2e32
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wb?keyword=wahoo%20elemnt%20bolt%20manual%20download`. This URL is embedded within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also contains a link farm heuristic, indicating it's part of a larger SEO poisoning effort to distribute malicious content. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=wahoo%20elemnt%20bolt%20manual%20download
    • http://files.ourhouse-yourhome.com/uploads/1/3/1/3/131381640/tavexaxakutora.pdf
    • http://files.nolapaintersdbr.com/uploads/1/3/1/0/131070481/wutodosi-kuvodetekeb-dinuvivugo-goponelikab.pdf
    • http://files.atticapothecary.com/uploads/1/3/2/6/132695525/vudemezu_fenodirulutur_dofix.pdf
    • http://files.newnamenewlife.com/uploads/1/3/1/4/131484029/memakelepemo.pdf
    • http://files.jbirdmultisportcoaching.com/uploads/1/3/0/7/130739253/sasipani-surosigifunubo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/duxokazodav.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/rogupejoraguva.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2695/files/gijubes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zosogorimojafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/53513310079.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/aeronef_rules.pdf
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/minebigulapimulotiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/wosejupuferom.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/47463416050.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/lefadamupeka.pdf
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/asus_z170-_a_drivers.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_off0000de60.bin
d70718f4d4b028f4ae345d627b8110d2448f1a4816d443d5a0e31c0c4549a92b
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE60 5036 bytes
font_01_sfnt_off0000ef73.bin
ae76bbd508d98f7d4e817ff2da812dcb954ff652a397e4791905ed7abe7ca686
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF73 12344 bytes