Malicious PDF — malware analysis report

Static analysis result for SHA-256 89264076ff754cb8…

MALICIOUS

PDF

45.2 KB Created: 2020-08-09 17:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53166d4b645bfa8f5010e12bc69f2ac2 SHA-1: b71825068c50c8555cdf13014b6c68c597934c34 SHA-256: 89264076ff754cb87af0a182875954321cc925441f2c43a6a2c2e76a316e34aa
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with many links pointing to potentially malicious or unknown domains. One critical heuristic identified a PDF redirector link to 'ttraff.com', which is known malicious infrastructure. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting it's the primary lure. The presence of numerous links, many hosted on Shopify, indicates an attempt to create a large, distributed link farm for SEO poisoning or to obscure the true malicious destination.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=automata+theory+pdf+tutorialspoint
    • http://takekorat.graemation.nz/uploads/1/3/0/7/130775432/9104765.pdf
    • http://files.womensbalancehealth.com/uploads/1/3/0/7/130739212/1b7e5fa52.pdf
    • http://files.derrickgriffey.com/uploads/1/3/0/8/130873732/1462424.pdf
    • http://jitim.theartsparkle.com/uploads/1/3/1/3/131384771/b5a9929fb1f04ab.pdf
    • http://rumen.noblesrealtygrp.com/uploads/1/3/0/7/130775320/zuxawemisukela.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/5th_grade_daily_math_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/windows_10_mct.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3366/files/5.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/12914746312.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98559129476.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0532/files/pathfinder_manual_of_war.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/gukudapokedizoj.pdf
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/49388963522.pdf
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/wepumukelujobovuriz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3017/6159/files/votamosalukajiru.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/veterinary_zoonotic_diseases.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/19066967351.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a48.bin
f3c84a8b77e54720fc66c8fa1b31a9783582c34df9314a163f25c5179b02f477
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A48 5372 bytes
font_01_sfnt_off00006c6e.bin
fc4c1a925ed7b75cb95b08f956e608e29ee890ef883fe6008327a209e195b58f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6E 10432 bytes
font_02_sfnt_off0000900c.bin
4a4185597eb0ebf67fea43fa5a3d87e848c05adaa7d4aa41a9d6dbb22332dc80
pdf-font-stream PDF embedded font (sfnt) at offset 0x900C 16744 bytes