Malicious PDF — malware analysis report

Static analysis result for SHA-256 d81e2c720e1d7ec3…

MALICIOUS

PDF

124.7 KB Created: 2020-09-03 19:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af3a452b2e2a6d9ecee8c47cc7b73235 SHA-1: eb16835c0af96753ef49144289e394747ce8dc6e SHA-256: d81e2c720e1d7ec380bb4f803935765606035d87166dd029d55ef4b911afd8e2
150 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, specifically ttraff.ru. The document body, though heavily obfuscated, contains text referencing 'Canadian citizenship processing time 2019 spreadsheet', suggesting a lure to trick users into clicking the malicious link. The PDF was flagged by multiple critical heuristics for malicious redirector links and link farming.

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=canadian+citizenship+processing+time+2019+spreadsheet
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/3345874247.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/wobebewagexerosetezuwogaj.pdf
    • https://cdn.shopify.com/s/files/1/0465/2456/3614/files/kubota_bx2230_operator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/3001/0273/files/problemas_resueltos_de_sistemas_de_control.pdf
    • https://cdn.shopify.com/s/files/1/0428/9704/7718/files/muxikubebigo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/ashoka_full_movie_sub_indo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5473/4241/files/59127610059.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/ponolejeratoxiwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0069/files/93233663821.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/jotiremusan.pdf
    • https://cdn.shopify.com/s/files/1/0439/0905/4619/files/gafujubaduxaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9266/3702/files/3080078814.pdf
    • https://cdn.shopify.com/s/files/1/0439/4650/8456/files/abdullah_ocalan.pdf
    • https://cdn.shopify.com/s/files/1/0454/7071/1958/files/lokifofazugeziluxaxow.pdf
    • https://static.usrfiles.com/ugd/07ef24_a37083f7ab7a4da6a94ba5c3e6693930.pdf
    • https://static.usrfiles.com/ugd/9df9d6_fa14ee373f5842c689194aa105d45992.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_off0001ab7c.bin
fb3d742d151d904554910a271ce3237efa982862a0ea7140b788c4fd5d835507		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB7C 5892 bytes
font_01_sfnt_off0001bf68.bin
7202842f022d9a1457b6e9774348519359bd3caa11960e89c7a6408f03dc8907		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF68 11036 bytes

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