Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17cff8e0dd53315…

MALICIOUS

PDF

41.8 KB Created: 2020-09-05 19:18:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 004b48e63a3b20fbb4e80df0694ce578 SHA-1: 8e663a4da8c82f51df814aa0e2ddd0abfee41b42 SHA-256: e17cff8e0dd53315106a874fa3cf514de4e4a8d6f4f58614d7036747809f6cf7
150 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious infrastructure, disguised as a manual for a networking device. The document body and embedded URLs suggest a lure to trick users into clicking the malicious link. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential SEO poisoning or link farm tactic to distribute the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=aztech+homeplug+av+200mbps+wireless+extender+manual
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/nadufixufupogafexanale.pdf
    • https://cdn.shopify.com/s/files/1/0436/8600/2843/files/wetusi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/desinizo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/66538890099.pdf
    • https://static.usrfiles.com/ugd/55cc32_b71b1a6fe08b40eaa82603a1405060e9.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/unison_audio_midi_chord_pack_free_do.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/69035736197.pdf
    • https://cdn.shopify.com/s/files/1/0436/3495/0304/files/laluj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/11276178824.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/xikumabedepimatam.pdf
    • https://static.usrfiles.com/ugd/4f92c1_60c38494d7ad494aa194297b2949a1e1.pdf
    • https://static.usrfiles.com/ugd/b3bc21_61de8313f4254d4aa6447c0171fd3298.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_off000062d9.bin
6a0f7dc44309b0e6dafe6b9dc6f76ba0db507a8fc941f738f5d7bea0cc66cb9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D9 6160 bytes
font_01_sfnt_off000077bd.bin
696f811371a5454610e4550ebf44f92066130182198120fab87db62dc907fcf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BD 10196 bytes

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