Malicious PDF — malware analysis report

Static analysis result for SHA-256 f76d61b4e52233cd…

MALICIOUS

PDF

43.2 KB Created: 2020-08-11 15:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80acc7a2d233e1ea1d553df637af2a13 SHA-1: 0fdf9cae285b5202d890e3710811ec4b909a910a SHA-256: f76d61b4e52233cd4539de455c775031eec24221abc68085400d6266d3f419e2
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=fundamentals+of+accounting+principles+pdf. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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=fundamentals+of+accounting+principles+pdf
    • http://files.honestyisthenewromance.com/uploads/1/3/1/3/131379894/ea384573271cbb.pdf
    • http://feteme.vettoriofficial.com/uploads/1/3/1/0/131069934/9083582.pdf
    • http://zevut.jgwebdesigns.net/uploads/1/3/1/6/131637240/d9af9408495f7.pdf
    • https://cdn.shopify.com/s/files/1/0455/4617/6677/files/adverbs_of_frequency_and_manner_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/1114/4858/files/cheats_for_mount_and_blade_warband.pdf
    • https://cdn.shopify.com/s/files/1/0435/6590/8123/files/dopadekovotatufa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66179678401.pdf
    • https://cdn.shopify.com/s/files/1/0449/5107/7032/files/kwikset_910_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/78562534290.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/97956585308.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/75736047909.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/70429702251.pdf
    • https://cdn.shopify.com/s/files/1/0435/7062/6723/files/mapa_geologico_de_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/dubawibuborulisububizegom.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_off00005f12.bin
95a4511d38a99176c17fa7fe4baaafb284fd67bd2402fcb44e9adb04e71fbf29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F12 5432 bytes
font_01_sfnt_off00007173.bin
6f71df7559ee215e16c8f396f71e3ec6224138f18d4c23d202b847c6a0ec9c18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7173 9880 bytes
font_02_sfnt_off00009379.bin
bb965ea0515e7499bb47638dd5c820c8824ea93d586ac0d8f4a8f758a0d32bc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9379 3060 bytes

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