Malicious PDF — malware analysis report

Static analysis result for SHA-256 240c690d8813c319…

MALICIOUS

PDF

42.1 KB Created: 2020-08-22 18:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9304c8cd1aa7943ca9b263d39bc612d7 SHA-1: 61f2698f4da92f2a44897c571e95cd1bdb948c15 SHA-256: 240c690d8813c319227ae043359d27425295486e0aa091303c7f9e5516166484
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One prominent link, 'https://ttraff.cc/pify?keyword=audit+report+qualified+opinion+examples', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to audit reports and the malicious URL, suggesting a social engineering attempt to trick the user into clicking the link. No scripts were extracted from this sample.

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.cc/pify?keyword=audit+report+qualified+opinion+examples
    • http://files.thecakecottagemurrieta.com/uploads/1/3/0/7/130775537/velikafuroluvad.pdf
    • http://files.ladderbird.com/uploads/1/3/1/4/131452811/67f8a2935d.pdf
    • http://files.namiracinecounty.org/uploads/1/3/0/7/130776661/rugewatezanof.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/tazewowezuminisabim.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/kenasuwowagumajabezalon.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/58437517578.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/que_es_la_caries_dental.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8104/files/28651870250.pdf
    • https://cdn.shopify.com/s/files/1/0437/0310/7752/files/9045262507.pdf
    • https://cdn.shopify.com/s/files/1/0439/3720/2344/files/wajufafo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/xusokimetof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/change_to_editable_word_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/bamatewanupanisaligeve.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_off00005b77.bin
a753cbd9fc983763d094c57fb69e2893ddbfa4aef43920b57df0303295275f4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B77 5252 bytes
font_01_sfnt_off00006d37.bin
606d622bf29ded88bc10d7d9c4d3f040bdff73b789e16ab70510b31627f9e82f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D37 9464 bytes
font_02_sfnt_off00008d77.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D77 4324 bytes

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