Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b00e19ce822643…

MALICIOUS

PDF

34.8 KB Created: 2020-08-22 07:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c40d55612783d68c4293575b1c9a985e SHA-1: 311ea64005434fa7809c718318035b6ebef2daf8 SHA-256: d0b00e19ce822643988268ed6d1a4badbf74fb7b02b99b2c5f6f9fbd2284c9f5
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One of these links, https://ttraff.ru/pify?keyword=love+of+my+life+piano+music+sheet, is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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=love+of+my+life+piano+music+sheet
    • http://files.zanyunoodles.com/uploads/1/3/0/7/130739381/sikete-wemotuta.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdf
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/88203981941.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/93279087001.pdf
    • https://cdn.shopify.com/s/files/1/0452/1276/2263/files/jomagakibisisuborijiza.pdf
    • https://cdn.shopify.com/s/files/1/0433/8604/4572/files/sixisukivulezidogimusi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/volvo_s40_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4490/files/tofezizalabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5067/2026/files/swokowski_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/92102289927.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/sodafelopado.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_off00003db3.bin
fc91994860499796f3330ecb1cad0cf6a277dc09910966e70eca587be9af4458		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DB3 5144 bytes
font_01_sfnt_off00004f1d.bin
ea80175dea7357a3899ac35a51969888a03ad351e9bafaf3508a980e8678e29a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F1D 9808 bytes
font_02_sfnt_off00007097.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7097 4324 bytes

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