Malicious PDF — malware analysis report

Static analysis result for SHA-256 c530eb439200f035…

MALICIOUS

PDF

40.1 KB Created: 2020-08-29 21:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0839404617f73d5b28513f31e974b4e0 SHA-1: 23963648c6df0c8a420b16c6c1dce2ad0b6041c3 SHA-256: c530eb439200f03520c5f2d1e3a0e8877a3041adec574e983f425dd2e79b3ce8
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL 'https://ttraff.link/wix?keyword=call+of+duty+black+ops+zombies+maps' is the primary indicator of this malicious redirection. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a social engineering lure to entice clicks.

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.link/wix?keyword=call+of+duty+black+ops+zombies+maps
    • https://cdn.shopify.com/s/files/1/0438/2641/3725/files/37001185894.pdf
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/www_alc_co_jo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/larilu.pdf
    • https://static.usrfiles.com/ugd/8b49c6_92dc36540cd54e31a9745f9904579f24.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed2e180409194f98bff96c534e57243b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c723ba9a3f5462caa9481fd5195fafa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/gupofefiwonaripikovubew.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/rubik_s_cube_7x7x7_solution_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/games_strategies_and_decision_making_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buxigol.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_off00005ab6.bin
5edc54880efbbb53ae5c0c31c6c700e9811d3afd5fa152a7f883fbeefae988f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB6 5464 bytes
font_01_sfnt_off00006d4e.bin
7ed6d762a44f2d832f012fc4fafa96303edcfd789790f1e1bbb19b718abd2ed6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4E 11336 bytes