Malicious PDF — malware analysis report

Static analysis result for SHA-256 97116cf4c8b72ad0…

MALICIOUS

PDF

41.6 KB Created: 2020-08-14 00:17:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 442669caf192c471a0196074b249cd29 SHA-1: 118ec73196facf64c5b0fe33f0dc3993fc4387cd SHA-256: 97116cf4c8b72ad04f091e816707278890a7b2498ede6ce25018f120e0f0827d
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=brain+train+manual+answers'. Another heuristic identified a PDF link farm, with the first URL pointing to 'https://cdn.shopify.com/s/files/1/0433/1195/6126/files/43685804783.pdf'. The document body is heavily obfuscated and contains the malicious URL, suggesting a lure to external content.

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.com/pify?keyword=brain+train+manual+answers
    • http://files.balikbalangay.com/uploads/1/3/1/4/131452861/zowotivipal.pdf
    • http://files.tackandhorseoman.com/uploads/1/3/1/4/131407737/00e48a.pdf
    • http://vatowinez.quigglecollective.com/uploads/1/3/0/8/130813372/lesobefamusow.pdf
    • http://files.printslinkphila.com/uploads/1/3/1/4/131482892/8978254.pdf
    • http://files.centre5pinbowl.ca/uploads/1/3/1/3/131378779/1743294.pdf
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/43685804783.pdf
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/personal_development_goals_for_work_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokavurovapipemekimisam.pdf
    • https://cdn.shopify.com/s/files/1/0437/8171/8167/files/zipuvovufipajodipanezejav.pdf
    • https://cdn.shopify.com/s/files/1/0435/1511/7727/files/combinatorial_topology_alexandrov.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/surawul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/davunaxejapezuxipuwuwozom.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/59830789178.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/dd_form_2981.pdf
    • https://cdn.shopify.com/s/files/1/0440/5267/6773/files/49836418543.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5317/files/gafugasapuseto.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/31152575740.pdf
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/car_insurance_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/kinovuzobolide.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_off00006626.bin
a39ce297882a80eaa3a5177580706417b2a66c877bcf9c90fdf74c707518b562
pdf-font-stream PDF embedded font (sfnt) at offset 0x6626 4972 bytes
font_01_sfnt_off000076fe.bin
1ac300df2aefdf4120d4d88e5d4612a6ed8139523d7c09934b9d989380ab09b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x76FE 10108 bytes