Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a11cc06d706e07…

MALICIOUS

PDF

41.5 KB Created: 2020-08-31 08:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd051f1d66192e9d611044b05570ba02 SHA-1: 7284f177e335639c370f40f3da2721f8c7ff16a5 SHA-256: 36a11cc06d706e07df821f8647116e9836917d0d94f50dcc482872180a616e35
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, ttraff.com, which is designed to lure users to malicious sites. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. No scripts were extracted, but the presence of a malicious redirector link strongly suggests a phishing or social engineering attack.

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.com/wix?keyword=james+island+library
    • https://static.usrfiles.com/ugd/7baf93_a0e02fe01c134561b621a4f57e0f724c.pdf
    • https://static.usrfiles.com/ugd/93971e_f7dc186cd67c4cb3a0e89f4e1af11a67.pdf
    • https://static.usrfiles.com/ugd/b8c837_955a13aea1074fa1b367fd6c49cbe768.pdf
    • https://cdn.shopify.com/s/files/1/0429/3676/2527/files/78434511447.pdf
    • https://static.usrfiles.com/ugd/b8c837_da1b8b8407d442d7998881b1a0444216.pdf
    • https://static.usrfiles.com/ugd/238140_a4735c9fc18d4decb9d159159670809f.pdf
    • https://cdn.shopify.com/s/files/1/0433/7644/3557/files/temusalinepefegajilevafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/new_orleans_saints_injury_report_week_14.pdf
    • https://cdn.shopify.com/s/files/1/0430/8438/2357/files/21499728366.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4312/files/64631648601.pdf
    • https://cdn.shopify.com/s/files/1/0429/3951/5039/files/51029753003.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_off00006532.bin
2ddce420d2dab2cc117d396cd96c881effb95a9492974f1355632ba17e935724		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 5204 bytes
font_01_sfnt_off000076c2.bin
5f77fee8c0d9e0cd2e83a40074a2ffe673b6e29ee18117376eee33a9e7fb9fc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C2 10076 bytes

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