Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ecf63f99cfd77f3…

MALICIOUS

PDF

43.8 KB Created: 2020-08-21 18:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45d72fd5c6346612f8fe454b45e65063 SHA-1: 0ed89fc26692cfc1c1ebaca6d726873526f85939 SHA-256: 7ecf63f99cfd77f341bf1bf3b9ffd68ab2dd5acfec07880059eb3dd8ad3a41bd
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to 'backwoods home magazine pdf' and the malicious URL. This suggests a social engineering attempt to trick the user into clicking the link, likely leading to a malicious download or exploit.

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=backwoods+home+magazine+pdf
    • http://luzub.beckydpersonaltrainer.com/uploads/1/3/1/4/131407836/davedaroxuruzov.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/roxix.pdf
    • https://cdn.shopify.com/s/files/1/0430/2517/0595/files/31079500875.pdf
    • https://cdn.shopify.com/s/files/1/0435/2969/9482/files/62053520101.pdf
    • https://cdn.shopify.com/s/files/1/0435/2504/6423/files/toxujix.pdf
    • https://cdn.shopify.com/s/files/1/0430/8336/6551/files/62519192365.pdf
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/30584000280.pdf
    • https://cdn.shopify.com/s/files/1/0435/7606/6211/files/98720491296.pdf
    • https://cdn.shopify.com/s/files/1/0432/6742/4412/files/writing_tips_for_ielts_academic.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/73909214578.pdf
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/rupakuzabavozopewuminir.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/75707672457.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_off00005e9a.bin
f1b1e278e831b494e749ca4128481b32abf36ba8aaf0865f6fad96a06aed9336		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9A 5404 bytes
font_01_sfnt_off000070ed.bin
f2d61f671db15cdd3fe1f78391cdc3d61eab908a40d9c40a74ead78068428380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70ED 10412 bytes
font_02_sfnt_off0000949e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x949E 4324 bytes

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