Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff82f610f748ca7…

MALICIOUS

PDF

38.7 KB Created: 2020-08-03 04:07:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c06b169e9a67f12069715f05e08cde66 SHA-1: 854d3d0667061a77b8a152362cdc94c6dc533167 SHA-256: 1ff82f610f748ca769fdc100a53ba755b3d63ecd88e2c67953339655a32966cd
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=aditya+hridayam+telugu+pdf'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is designed to host numerous external links, likely for SEO poisoning or to distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=aditya+hridayam+telugu+pdf
    • http://files.wapadrant.co.za/uploads/1/3/2/6/132680781/xepunadevaxepov.pdf
    • http://files.onthedryingrack.com/uploads/1/3/2/3/132302824/7296820.pdf
    • http://files.tmcwilliamsmusic.com/uploads/1/3/2/7/132712129/8624608.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/liwenote.pdf
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/goborobetuwena.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/vaxiliwelagesexivadul.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/30965299583.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/35439682901.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/somajemubazoponowado.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2799/files/81986693278.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/vuvegopixepe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/talujawilivuxizimogetovaf.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/79264398029.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/wumikodelanesigesuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/juzopuzenafososokazulu.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_off00005238.bin
1fc0fc528af6009665002f7c13c1ffaa8575b4f5956f4a840ec673dd91db08f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5238 5368 bytes
font_01_sfnt_off0000645c.bin
027d39a2663ae9602a3d5046bd4ae5e474269d374f8a1d8a194581bc89509e43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645C 12816 bytes

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