Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36678db2c607dd9…

MALICIOUS

PDF

61.6 KB Created: 2020-08-06 15:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5354f9f76e7db9cf5613ae3e15843927 SHA-1: 75e41e61b21e05818d1c8b4ecab974d2958e9b4e SHA-256: f36678db2c607dd9020b4a41847e230aba06c6bb16b4197d94f98cdeb9786825
120 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, pointing to 'https://ttraff.ru/pify?keyword=basic+self+defense+techniques+pdf'. This URL is likely part of a phishing or malware distribution chain. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted from this sample.

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=basic+self+defense+techniques+pdf
    • http://saxapu.steppingstonedaycare.nl/uploads/1/3/1/1/131164243/2269762.pdf
    • http://files.andrew-hendry.ca/uploads/1/3/1/8/131872048/zujivabuxavirezisi.pdf
    • http://files.endlessglass.co.uk/uploads/1/3/1/4/131438641/pawazukejes.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/nipumobazato.pdf
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/rejixanizuboj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0497/files/pozamofibunadej.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/55187500304.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5704/files/47917899250.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdf
    • https://cdn.shopify.com/s/files/1/0448/0807/7473/files/ge_hydro_heater_washer.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/lamisevupakutolinamiked.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/vuwekimexom.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/asma_aguda_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/53831642004.pdf
    • https://cdn.shopify.com/s/files/1/0432/5569/3470/files/29805145576.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000cec6.bin
2e695c2d82d5d4a8d512347093cbf84b5a37b0aeefc14d1896962eb4cdd1650c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCEC6 17376 bytes
font_00_sfnt_off00007a03.bin
5caf17c76396264f01d547ff608ae7b0f45c7b87e75bdafee13c803b215a3ed3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A03 5320 bytes
font_01_sfnt_off00008c14.bin
20900058c2610e2d1c2a0850d8565dadae547b906aa8c037187d495059dc5173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C14 9852 bytes
font_02_sfnt_off0000a768.bin
e433b0a3611ab58fcc8f163e2156a3bbf82ccf20fa0565bd033b3e81935f3e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA768 12848 bytes

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