Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bde96693505ed43…

MALICIOUS

PDF

60.4 KB Created: 2020-08-07 19:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98ebdabec7e0ca83df715ef558ce95c1 SHA-1: 7a6b32bd1527c047bae0cfaf45d5f43e9e28194e SHA-256: 9bde96693505ed43bb9ad56de9430350f686f03e72e53cec9b57863464001894
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ganapati+atharvashirsha+pdf+sanskrit'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to Shopify-hosted PDFs, suggesting an attempt to manipulate search results or distribute content. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the phishing or malware delivery intent.

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.ru/pify?keyword=ganapati+atharvashirsha+pdf+sanskrit
    • http://files.sonjahermann.org/uploads/1/3/2/6/132680905/7268385.pdf
    • http://nelape.theatreodyssey.com/uploads/1/3/1/4/131438216/32ce216d8c5b6.pdf
    • http://xuxivevoz.petersburgchurchofchrist.org/uploads/1/3/0/8/130873995/8154353.pdf
    • http://gekoga.kaelynnsartstudio.com/uploads/1/3/1/0/131070450/dutotax.pdf
    • http://supotapap.caitweiss.com/uploads/1/3/2/8/132814930/77724fae20db4.pdf
    • http://gekoga.kaelynnsa
    • https://cdn.shopify.com/s/files/1/0434/3965/3030/files/how_to_search_a_document_in_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/buwad.pdf
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/nasuvakaxuponiketidobeba.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/binomial_probability_practice.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
    • https://cdn.shopify.com/s/files/1/0433/3453/3275/files/guia_prtico_ilustrado_para_biomagnetismo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9501/files/89388930644.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/88482310881.pdf
    • https://cdn.shopify.com/s/files/1/0435/6135/3371/files/kujob.pdf
    • https://cdn.shopify.com/s/files/1/0434/7917/1222/files/39572499250.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074e1.bin
ee3e6b5f379f6aede2472a8acca0671f14d82591a63e92a0c03079692a4890a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E1 4812 bytes
font_01_sfnt_off00008525.bin
38ca0e522c264f10566fd8f9f5c124bdae5fd36c6204e1bfeee9d4d6bbef3686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8525 3772 bytes
font_02_sfnt_off000090c8.bin
7175e887847823da068ffeed2c2fdfa458ed285fffdc8a06d1282f320b9481cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90C8 10312 bytes
font_03_sfnt_off0000b325.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB325 4324 bytes
font_04_sfnt_off0000c126.bin
8527dfe0497dcee664f6e9c71a0e03b466e23e0a52315f79e2f92b90f14f85a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC126 10724 bytes

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