Malicious PDF — malware analysis report

Static analysis result for SHA-256 c79422bb6653dc52…

MALICIOUS

PDF

52.4 KB Created: 2020-08-31 03:48:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c26d4b74c8cbcc255100b7e5055d4561 SHA-1: 64b031f502702cd817c4eb75b82730ded6cd3402 SHA-256: c79422bb6653dc523655fe48af2afebd9d39d1c3f01dac563ee0fd2e8981bf8d
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'saftronics pc3 manual'. This link points to 'ttraff.link', which is known malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify, likely as part of a link farm to improve SEO for malicious content. 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.link/wix?keyword=saftronics+pc3+manual
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/49436730465.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/8th_grade_math_worksheets_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5694/files/nomometaxerojixoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/notil.pdf
    • https://cdn.shopify.com/s/files/1/0439/0099/3704/files/rorejulagiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/vatelomoximok.pdf
    • https://cdn.shopify.com/s/files/1/0437/3155/0362/files/ccna_routing_and_switching_portable_command_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/9509/5451/files/debekowozewuzuxobolufap.pdf
    • https://cdn.shopify.com/s/files/1/0434/0636/0730/files/7826344732.pdf
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/mazupanutivubu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1378/2173/files/dulixowawo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2758/5430/files/fipijutemofemeteseto.pdf
    • https://cdn.shopify.com/s/files/1/0437/7804/8151/files/used_car_as_is_bill_of_sale.pdf
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/bahamas_government_passport_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/6132449663.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/41526132250.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007975.bin
de8b15cb0bf169f03f4698d2a8eddc097f3cd750687d03a79b6f33034e2ed39a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7975 5192 bytes
font_01_sfnt_off00008aec.bin
d331c672ef0c4e048e7319a7dddce22242c58fbcab735f91d4cf6972a68f688a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEC 14064 bytes
font_02_sfnt_off0000b6e0.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6E0 4324 bytes