Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04dc6da9b2f589b…

MALICIOUS

PDF

47.0 KB Created: 2020-08-06 11:34:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adfc2656a782c0faa5a7fb0539879782 SHA-1: e5d9a10e2adcfcb0b83b587005bcce036abe2773 SHA-256: e04dc6da9b2f589b3f2ccbce000b39662496cb6562490276d27555c3ad3fa0c0
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a legal judgment, redirecting to malicious infrastructure at ttraff.ru. The ML classifier strongly indicates maliciousness, and the PDF structure is consistent with SEO-based link farms used for phishing or malware distribution. No scripts were extracted, but the primary attack vector is the embedded malicious redirector link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=aarushi+talwar+judgement+pdf
    • http://gajan.rockvillehelp.org/uploads/1/3/1/4/131454024/lekofepubenotelexa.pdf
    • http://files.codergals.org/uploads/1/3/1/3/131383314/a4e91c.pdf
    • http://files.rlighthouse.com/uploads/1/3/1/3/131379174/remidakoluwavam-vufiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/molikota.pdf
    • https://cdn.shopify.com/s/files/1/0428/4681/4374/files/dream_maker_spas_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/50408321960.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83406059157.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/koruzavunukukuliw.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/carrom_rules_and_regulations.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/30118850550.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/pabifubugos.pdf
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/76884880856.pdf
    • https://cdn.shopify.com/s/files/1/0430/6554/0759/files/77067365666.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079eb.bin
1e339a3e9311d582e4ef821547b2357e9846f06ac34cd7c2515f21c7697e2f85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79EB 5612 bytes
font_01_sfnt_off00008cf4.bin
d9b6c10504cd79c63386263cf229bdd4f3261ca651f5bc2a39e65130828dcb1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF4 10104 bytes

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