Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0cfa5427e68690…

MALICIOUS

PDF

42.4 KB Created: 2020-08-22 17:59:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9542f2535c8d17c63a3a0e16f7f2c684 SHA-1: f88cd806fb57f9e77c2391e4351e98d000c80af8 SHA-256: 9e0cfa5427e68690fff90fb2e0e68a3aa70c09ab02cf6ff295f03f9588a7037b
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a related benign-looking Shopify URL, suggesting a lure. The presence of a PDF link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, content.

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=kitchenaid+cookie+sheet+slider
    • http://files.fieldmarshalmontgomery.com/uploads/1/3/1/3/131383512/1db64c8d.pdf
    • http://wikifi.ucmun.com/uploads/1/3/1/4/131438477/rumasotu.pdf
    • http://files.manalgarciafitness.com/uploads/1/3/0/9/130969139/05dc13c35e5a.pdf
    • http://zulew.ujamaachildren.com/uploads/1/3/1/4/131409167/jomuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0669/files/52967227288.pdf
    • https://cdn.shopify.com/s/files/1/0428/1470/1735/files/46423064994.pdf
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/83794761998.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/clasificacion_de_los_bienes_y_servicios_economicos.pdf
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/ib_biology_course_book_2014_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/julamisesezorukale.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/91202225735.pdf
    • https://cdn.shopify.com/s/files/1/0436/1859/9075/files/pafenozelusix.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/typeracer_auto_typer.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/algoritmo_de_dijkstra_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0429/2847/2220/files/57992417663.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_off00006826.bin
b1329b764fd552ce13af788da21a30d91e9574a4825bab2d917e38a8a75eccad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6826 5060 bytes
font_01_sfnt_off00007941.bin
67014d419ca6c6b7f4fca7dc1c28fa0cd63dcc654f9cafafb00d5e3268d1c5e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7941 10420 bytes

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