Malicious PDF — malware analysis report

Static analysis result for SHA-256 c904e35a9452272a…

MALICIOUS

PDF

44.1 KB Created: 2020-09-18 08:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65b4a1336dc96b68981ec03c054d136a SHA-1: 55025b8f1aac6d5e2e647c8a13ee0ed2ec394539 SHA-256: c904e35a9452272a88c501c46678e04176063997ea8e479d8810b9a979b740ec
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, a technique often used for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.me/wix?keyword=skyrim+konahrik%2527s+accoutrements+dragonborn', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended lure. The presence of a link farm and a malicious redirector indicates a phishing or content-distribution attack.

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.me/wix?keyword=skyrim+konahrik%2527s+accoutrements+dragonborn
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/12056182081.pdf
    • https://cdn.shopify.com/s/files/1/0434/7346/9597/files/menapopivuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/lamelagomubezata.pdf
    • https://cdn.shopify.com/s/files/1/0428/2905/4118/files/84816484442.pdf
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/sociology_books_for_ba.pdf
    • https://d5b2b494-680c-4981-87de-9a934ff8843f.filesusr.com/ugd/b85eb0_86135b2278524f8a84151e165c83052e.pdf?index=true
    • https://eb6394df-40db-4c13-b104-5881fdbd7614.filesusr.com/ugd/74147a_cc88d2fa36fe4c36a54f9ebbe9eea3e2.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/balanza_de_pagos_peru.pdf
    • https://cdn.shopify.com/s/files/1/0434/1330/7541/files/anencefalia_genetica.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_off00005f52.bin
f7a3d2ffdf5cb155f9e2c645f488ee9655c3b70eca0d5eecfb1d438dd009e4ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F52 5644 bytes
font_01_sfnt_off0000724c.bin
96b229ae9770ea215a9b3fc4199faef673ec08e6d2a17d9eb5ada7f18530ad52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 10256 bytes
font_02_sfnt_off00009568.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9568 4324 bytes

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