Malicious PDF — malware analysis report

Static analysis result for SHA-256 6058c46156db5211…

MALICIOUS

PDF

47.6 KB Created: 2020-08-19 12:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95a3f02d97de1318df340231a104dde7 SHA-1: 82623b49de0e154a404b206e63eea154d52b32c4 SHA-256: 6058c46156db5211cc001937561131cd7e0aa74ab95e06ce6c775dce8ea4f71d
154 Risk Score

Malware Insights

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

The PDF document contains numerous links, masquerading as a game guide, that redirect to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=crusader+kings+2+tribal+ireland+guide, which is flagged as a malicious redirector. The document also contains a large number of links to PDFs hosted on Shopify, likely part of a link farm to manipulate search engine results.

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/pify?keyword=crusader+kings+2+tribal+ireland+guide
    • http://wevove.zagarefringe.com/uploads/1/3/0/8/130814020/48494.pdf
    • http://files.theblakeneybreezes.com/uploads/1/3/1/6/131637876/fikatu.pdf
    • http://jotewu.icert.co.nz/uploads/1/3/0/8/130813988/xuker.pdf
    • http://gexidani.citataxpayers.org/uploads/1/3/1/1/131164066/fufomid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/57508509041.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/70024736296.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/tumunejijisut.pdf
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/annex_14_bahasa_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/nufigewudipaxelufujesun.pdf
    • https://cdn.shopify.com/s/files/1/0431/6315/6641/files/pptc_132.pdf
    • https://cdn.shopify.com/s/files/1/0435/7708/2019/files/kevunodozi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/31046347102.pdf
    • https://cdn.shopify.com/s/files/1/0428/2266/4348/files/53527345634.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2165/files/zalidimos.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_off00007cd9.bin
7ae5117267e6ff5530bdd0c7d44aa70a46b6c79d21e9326e4e976a16f00823c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD9 5236 bytes
font_01_sfnt_off00008eb0.bin
f0419454c3229310a7f4ccd877d44ab98a0e3762a5f01af3c6edf4ea9d9a90f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB0 10184 bytes