Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c637e1228f67850…

MALICIOUS

PDF

36.3 KB Created: 2020-08-06 08:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af48419d26edcaf7df291df9e375f20c SHA-1: be0b08d287b1c4372eaa380b7ffc2acff5b98263 SHA-256: 8c637e1228f67850920b500ff4087002056af3c1b71969207804ac3c25a7ce24
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link to 'ttraff.ru' is flagged as malicious. This suggests a link farm or redirector technique to obscure the final malicious destination. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. The primary intent appears to be directing users to malicious infrastructure via the 'ttraff.ru' URL.

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=diccionario+biblico+strong+en+espa%25C3%25B1ol+pdf
    • http://files.goossensdesigns.com/uploads/1/3/1/6/131606533/780ea4a62.pdf
    • http://wokudid.sunnex.org/uploads/1/3/0/9/130969368/zezezabujozijuli.pdf
    • http://files.heritageecc.com.au/uploads/1/3/0/7/130775432/b7a91b287662043.pdf
    • http://xanuzi.migrocers.com/uploads/1/3/2/6/132681947/sajejukidapogivusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/7134954501.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/kovigajafilarenifud.pdf
    • https://cdn.shopify.com/s/files/1/0435/4647/6708/files/helvetica_font_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6119/files/tcpdump_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6984/9246/files/97162346692.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/kozak.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/40981457378.pdf
    • https://cdn.shopify.com/s/files/1/0434/2677/5196/files/dojowinajafaxubowojanore.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/18028865233.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/nolanetonutoguzikipo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3156/0354/files/6240581052.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_off0000479a.bin
0634387f5b4df88fa1764b9e63b36811d17649cbd008853e9366d92e98664447		 pdf-font-stream PDF embedded font (sfnt) at offset 0x479A 5672 bytes
font_01_sfnt_off00005aa9.bin
82d33d20bc6b757fa04d98d17526e944e531b6f460165a9d461e7c069bfefc7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA9 12276 bytes

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