Malicious PDF — malware analysis report

Static analysis result for SHA-256 7489872e0bd179a5…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 09:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c4e68287607b71a540125f93d507e5e SHA-1: e88a578e163ad46d8b906ae319d0c87146119cb2 SHA-256: 7489872e0bd179a52b1f89b214baef9ce237c3e7bb7001f1e1e8d1751496fa87
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, including one pointing to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting it is a 'druid class hall campaign guide', likely a lure to encourage clicks. The presence of multiple external PDF links further indicates a link farm or redirection scheme designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=druid+class+hall+campaign+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/8a419d_081b47ad02a246a5a5be5cf021c4b7e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_52637f0ed32840d0a19be67597a8bf2c.pdf
    • https://static.usrfiles.com/ugd/3e9e83_d43418bbf8ec484a9e8fd396ad0d7ecc.pdf
    • https://static.usrfiles.com/ugd/1cfe37_3f3d04cbe683439886181a086d04d3eb.pdf
    • https://static.usrfiles.com/ugd/5b9a87_2d99ed884e0f47d78bd2faf49a47d937.pdf
    • https://static.usrfiles.com/ugd/eda9ba_01eba1e10ff94198911e514ff7db597a.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f9d7878fc5d424aa2ad22b1841f14e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d758355a40747b78d801443d6e8c92f.pdf
    • https://cdn.shopify.com/s/files/1/0432/8282/5382/files/58156395235.pdf
    • https://cdn.shopify.com/s/files/1/0435/2311/3119/files/zatuzodala.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0510/files/78232832602.pdf
    • https://static.usrfiles.com/ugd/b8c837_e195907eaac446be838b39e13d16cf2f.pdf
    • https://static.usrfiles.com/ugd/136d07_c0c1168f75b34eedba487dbb1332e560.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000615d.bin
b09ccb798c56256c6075c16f15571159bbca113f19b80265b9b203bb377e8d4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x615D 5488 bytes
font_01_sfnt_off000073dc.bin
9088e2ed9ce51599391b4b064fa4c3d3a7f90cc1abf9f815f8fb6fe93c692d1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x73DC 10104 bytes