Malicious PDF — malware analysis report

Static analysis result for SHA-256 025608bd91671bed…

MALICIOUS

PDF

39.9 KB Created: 2020-08-29 20:15:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b325d2b749777547a95b6538d783035 SHA-1: bd6eccc69b1b19d97700e8b5f43ed152bd6bc4e8 SHA-256: 025608bd91671bed4b367a22ace6e463995644ee4a8c25fc264754ce3e49e423
154 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as search engine results, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wix?keyword=midland+walkie+talkie+x+talker+manual, which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious content, likely for phishing or malware distribution.

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=midland+walkie+talkie+x+talker+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/borugas.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5196/files/wegelebevoxoxerexana.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdf
    • https://cdn.shopify.com/s/files/1/0437/8899/2674/files/macromedia_dreamweaver_8_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1401/files/ahle_hadees_books_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4214/3388/files/rafowuvekupudufiked.pdf
    • https://cdn.shopify.com/s/files/1/0432/7918/8118/files/5513575098.pdf
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/xikabo.pdf
    • https://static.usrfiles.com/ugd/122077_6134141fd55b4c3c8028c1063458f368.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce1ce81e67c94c0eb1b774aeb30db866.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/synovial_fluid_cytology.pdf
    • https://cdn.shopify.com/s/files/1/0439/7917/8142/files/mtd_yard_machine_riding_mower.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_off00005f48.bin
f608bc95b770473d05b517ff50dbcfeb0770463e8bd249af973ac8d407c57aea
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F48 5024 bytes
font_01_sfnt_off0000705b.bin
65f85afbca302b17c62eb6abb6fb47419f39868e9fb32ae9de2b3acf8941cc9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x705B 10136 bytes