Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c68d8f02d5d1ab…

MALICIOUS

PDF

41.7 KB Created: 2020-08-31 05:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fc26c457bf7cc0a925079477e8c600c SHA-1: 6d9ec7bdd9984f53321dd0a0e53d53902dd0e586 SHA-256: 02c68d8f02d5d1ab2ddd16356ba571365d4985242defa9cd8a694fa688c037fa
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a Sims 3 achievement guide. This is further supported by heuristics indicating the PDF links to known malicious redirector infrastructure and a link farm. The embedded content, though obfuscated, contains a URL that likely serves as the initial lure.

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.me/wix?keyword=sims+3+achievement+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/36f25b_4e21138509714ccc8bb5310aa51cb5fc.pdf
    • https://static.usrfiles.com/ugd/3f80ec_e348f9df665647c2be0d727ffb92aa9b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ce99a55629c4b23afebda09f8cda3de.pdf
    • https://cdn.shopify.com/s/files/1/0435/8212/8283/files/kezexesulusiga.pdf
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/94788624226.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/maplestory_m_horntail_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/6790/0058/files/bofafeg.pdf
    • https://cdn.shopify.com/s/files/1/0440/8125/0469/files/52963005215.pdf
    • https://static.usrfiles.com/ugd/b8c837_c181ee234ed64cc6ad4636f5a7081130.pdf
    • https://static.usrfiles.com/ugd/b8c837_6263b47bbb844538963b7dc5bdffd8f1.pdf
    • https://static.usrfiles.com/ugd/3aee12_85329fa9b80c4ee6b641555759f474d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_370d3142b2dd427b91091a4ecdfb54ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e3537f3090f4edbaf929c0d4e6f02a9.pdf
    • https://static.usrfiles.com/ugd/a1fb72_b92c6c7a48f34aedaa935459d236e216.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_off00006541.bin
bfab0bc6e2dcf8933b7c834094e4d697c4039ecee8c572beace00f9e43dc3676
pdf-font-stream PDF embedded font (sfnt) at offset 0x6541 5552 bytes
font_01_sfnt_off000077fb.bin
68dd4a9768f0f34772f5ef231bcfb020defe3a90d61340205a5dcaaf079835d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x77FB 10224 bytes