Malicious PDF — malware analysis report

Static analysis result for SHA-256 389ad42f1cc5d8a1…

MALICIOUS

PDF

40.5 KB Created: 2020-08-22 04:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 401f2366489805372092dde38cff7473 SHA-1: 3c973ba75e952a15b273530e5529133422e64507 SHA-256: 389ad42f1cc5d8a1a543c7a49a30e8ce5a09f366a3b272a1251a67102f99f136
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bryson+tiller+don%2527+t+lyrics' and references to song lyrics, suggesting a lure to trick users into clicking the malicious link. 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/pify?keyword=bryson+tiller+don%2527+t+lyrics
    • http://files.ratoathbadminton.com/uploads/1/3/1/3/131379443/2498766.pdf
    • http://files.forsythtavern.com/uploads/1/3/1/4/131437421/nokejiwoban-mobunuwuzu-xalubi-munoxabalob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jidaxuno.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5939/4213/files/59993705265.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3205/files/15060400086.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/car_rental_application.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8083/files/jududemetotewidabuke.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/72934680084.pdf
    • https://cdn.shopify.com/s/files/1/0429/5619/3955/files/14467029138.pdf
    • https://cdn.shopify.com/s/files/1/0429/3948/2275/files/ford_escape_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/apple_application_loader_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/fufaves.pdf
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/95058399235.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_off000062eb.bin
f57eac026bd14e8bc8a6c4d0570af301c4bcb668703cf2b48da4e22fbb42cf9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 4908 bytes
font_01_sfnt_off000073b5.bin
497b17cd02142c2176b2bdd93f1225312c4b38722b4eb77d89ff4171b71e253a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B5 9732 bytes

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