Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5672f70fdc44ef2…

MALICIOUS

PDF

36.4 KB Created: 2020-08-21 12:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6d7cbabf93d2c5ade2c46c5b379b871 SHA-1: 52962cbc3df71742c59988b771f3e0138fdad67b SHA-256: c5672f70fdc44ef2daa01e3d3686a335372e5d58ccf89c2e7d7e084e02e87d25
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=k+c+full+form'. The document body, though heavily obfuscated, also contains this URL and references to other PDFs hosted on Shopify. This suggests a coordinated effort to lure users 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.com/pify?keyword=k+c+full+form
    • http://jinufew.mysonnyrae.com/uploads/1/3/1/3/131379485/9999480.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/17245313312.pdf
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/leritaperixexuvelowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/kia_cerato_koup_2012_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/resumen_del_libro_el_alquimista.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/acetylene_sds.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/aristotle_athenaion_politeia.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/48926163684.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/9048664092.pdf
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/piwafisukeda.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/lazezenexoluno.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/74257612106.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1146/files/gradient_of_a_curve_worksheet.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_off00004681.bin
72d7267ef02afd14042b81a6299131577670ecbe0215f2105db27670bf5662f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4681 4140 bytes
font_01_sfnt_off00005483.bin
96886ae162d1563ee8013bb13dca5b83ae87f1a2a0af9681b8d608c0cbe429af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5483 10124 bytes
font_02_sfnt_off00007736.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7736 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.