Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c29a8d8ecd47f1d…

MALICIOUS

PDF

50.2 KB Created: 2020-08-30 01:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f2cdad2852b2d7bf0288b37ed4bfcdf SHA-1: 61fd9ae59879b7f31439693b3b177e5a34bfc162 SHA-256: 0c29a8d8ecd47f1d2e8a8fdb732059e275cb541ccdf907e5938d2c02625f2de8
154 Risk Score

Malware Insights

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

This PDF file contains multiple links, including one pointing to a known malicious redirector. The document body and embedded links suggest a tactic to drive traffic to external sites, likely for SEO spam or phishing purposes. The presence of numerous PDF links indicates a link farm strategy, and the primary malicious URL is https://ttraff.ru/wix?keyword=inhibidores+do+apetito+salcobrand+ph.

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.ru/wix?keyword=inhibidores+do+apetito+salcobrand+ph
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0441/2227/5992/files/95361340980.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/25870747202.pdf
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/xofiregirojofoz.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_2fe853560112463cad2ee475e8332d87.pdf
    • https://static.usrfiles.com/ugd/97aff7_808c7220962a470f9bc02e8ee57d05c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_03cd2da1f9fc42399650b944f5b7e15d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9af0223be4134b44aeaca6abddd61bdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_73c3feb5774a4625a0513c9c1c281488.pdf
    • https://static.usrfiles.com/ugd/b8c837_db2647f83d1e4539a2db7ad30ad77c8b.pdf
    • https://static.usrfiles.com/ugd/10e3af_7d2d21898afb4215b423b56efcf5d336.pdf
    • https://static.usrfiles.com/ugd/b58d21_2d6ccfecea5e44ea86e267ebca6907a1.pdf
    • https://static.usrfiles.com/ugd/097bd5_eece80d23cb74f20bbb623d2332a9a6b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000793b.bin
9e8eff7759932e1675098b2649521ea1e987bfc93d0c9b8e2a44e308efb1ff74
pdf-font-stream PDF embedded font (sfnt) at offset 0x793B 5024 bytes
font_01_sfnt_off00008a29.bin
d96466c36e165d8fd9e68364b2532d1e3ef37a648ed1f08dd3bae43cf3ac936c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A29 10500 bytes
font_02_sfnt_off0000ae0e.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE0E 4324 bytes