Malicious PDF — malware analysis report

Static analysis result for SHA-256 15b3e9cdab43a0a6…

MALICIOUS

PDF

41.8 KB Created: 2020-08-30 15:02:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 956eca374e4f63342fddf93107c5e38b SHA-1: 117fdbeb2c7ecadef7d6c9d1648edb6cbcccc808 SHA-256: 15b3e9cdab43a0a667d59965cadce381adfb840920c4695a5c05e5ea93f55d5b
154 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a malicious redirector, disguised as a download for a game mod. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links suggests a link farm designed to drive traffic. No scripts were extracted, but the primary attack vector is the malicious URL embedded within the document.

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.cc/wix?keyword=download+gta+san+andreas+mod+android
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/d1c05f_18a3c58906da43d88f89fdbdaa9be013.pdf
    • https://static.usrfiles.com/ugd/b8c837_69cf917caf734bc190fba76d69154479.pdf
    • https://static.usrfiles.com/ugd/b8c837_88e3500285b94696bd11af5ced4611ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_41cd3becc36648eb92556877ce68099e.pdf
    • https://static.usrfiles.com/ugd/8a419d_03fa2ce92e87473bba609f4e68ddca68.pdf
    • https://static.usrfiles.com/ugd/b8c837_139a9c5d3b4441b29ca999ea5cdc596e.pdf
    • https://static.usrfiles.com/ugd/b8c837_951e570927e8432a904e5e6ccbc294f8.pdf
    • https://static.usrfiles.com/ugd/cb2bed_92de4ca95cbf4fe19c1ec07b4b9f034d.pdf
    • https://static.usrfiles.com/ugd/8ab72e_29350989d2d54ca6af3ad7b8bf8380ed.pdf
    • https://static.usrfiles.com/ugd/d4da64_4190bb57aeed466bbbdf28260e45034e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b791972170c8475b940e8e287c149e54.pdf
    • https://static.usrfiles.com/ugd/b8c837_998863c5d1334780be8abf5439391b29.pdf
    • https://static.usrfiles.com/ugd/0bcf16_9bf0d9bcdae74df2bf36abdeac8ce450.pdf
    • https://static.usrfiles.com/ugd/704566_99d0029623ba4b1cb91a74b58d0c0115.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/waxawuvi.pdf
    • https://cdn.shopify.com/s/files/1/0448/8495/1207/files/7545036431.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/nelifufovomero.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_off0000659c.bin
e191c57d4f0d8f929ed81944c5468cd5153bfc36a751a4c1f397001af308d1e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659C 5236 bytes
font_01_sfnt_off00007769.bin
48667fca53218f194a1731262147e4ecfd9c18082c72efe430dee5a1593d8c89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7769 10000 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.