Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d12a038d666b32…

MALICIOUS

PDF

35.4 KB Created: 2020-08-31 11:24:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bce603ce8cbe8eba677c27f659afdbb SHA-1: e91e5b040091dcc0ce16b372cbefcff37fb55fc5 SHA-256: b7d12a038d666b32d4be545c523fab130b6bc60c2da72af89f48612c0c1dbf0c
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as free book downloads, a common SEO poisoning tactic. The primary link, 'https://ttraff.ru/wix?keyword=advocacy+and+opposition+7th+edition+free', is identified as a malicious redirector. This suggests the document is part of a phishing or malware distribution campaign, likely aiming to redirect users to malicious sites or download further payloads.

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/wix?keyword=advocacy+and+opposition+7th+edition+free
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/41622089423.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/77981264376.pdf
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/vemufolizofika.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/57026710792.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/xelunuribotipogimot.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/5250191032.pdf
    • https://static.usrfiles.com/ugd/4c1554_56a34fc875a94e44aeb20906c69c3c95.pdf
    • https://static.usrfiles.com/ugd/4b7290_3f8f11a03b624fc5bdc82251c6716bd3.pdf
    • https://static.usrfiles.com/ugd/cc14e4_863d18566f3f49cfa909275384f172c2.pdf
    • https://static.usrfiles.com/ugd/c7a620_532b07dfe9f84b49b304c46a080eb8bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_663a55f8981a44bc82b73d35778bb442.pdf
    • https://static.usrfiles.com/ugd/cbdbb6_07e45a775ad24f57916bdcba35d036aa.pdf
    • https://static.usrfiles.com/ugd/913720_0149343e841c4101807ae5f314656718.pdf
    • https://static.usrfiles.com/ugd/4117a9_d4bbfd74f3074e14af2ec1c5dcbb31d4.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_off00004ab4.bin
98052722bb6c7d52eb0312f678b2533615e48fb409d3aeb03e09e6555908f41b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB4 5440 bytes
font_01_sfnt_off00005d44.bin
21605495376bce9b2d382cad4de1ab1be5a1c2c80dc86b29a5ef6738702ea5b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D44 10440 bytes

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