Malicious PDF — malware analysis report

Static analysis result for SHA-256 40be97e23026e492…

MALICIOUS

PDF

40.3 KB Created: 2020-08-24 20:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6433470c7c7a64afc7e70d065bec16d SHA-1: f6c5d5fffedbae5dc685944dfc04100ceb00d736 SHA-256: 40be97e23026e492ef14081ed465db438efcd9ddcb31db312a636322d633a284
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Hopes and Dreams Undertale Piano Sheet Music' and the malicious URL, suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier strongly supports the malicious verdict.

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=hopes+and+dreams+undertale+piano+sheet+music
    • http://nadolijo.digistitchcustomapparel.net/uploads/1/3/1/3/131379290/8424891.pdf
    • http://barexa.birdiebags.com/uploads/1/3/2/6/132695478/levabelazubi.pdf
    • http://soseda.tanishqspa.com/uploads/1/3/0/8/130874233/1670498.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4229/files/lagiwukirusomejebo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4206/8887/files/weather_underground_bozeman_mt.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/tujaka.pdf
    • https://cdn.shopify.com/s/files/1/0435/6109/1221/files/13687101917.pdf
    • https://cdn.shopify.com/s/files/1/0461/1476/7012/files/pixuleganowetukog.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/vajafexofawixavib.pdf
    • https://cdn.shopify.com/s/files/1/0437/6425/2823/files/46155273408.pdf
    • https://cdn.shopify.com/s/files/1/0438/0036/3169/files/33089186164.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/ladezonuvogenokaba.pdf
    • https://cdn.shopify.com/s/files/1/0437/7919/5031/files/52080462847.pdf
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/47381100815.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_off00005203.bin
c412bc48bfe1eb136b386e97090e8a8318a837f592af9a97561adcd7c09a2a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5203 5272 bytes
font_01_sfnt_off000063b5.bin
5cfd8ea3f6856d5bca7a757f05242842afd239efb1405425b6fc697096a5d40e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B5 14656 bytes

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