Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe74cb283027ac4…

MALICIOUS

PDF

40.5 KB Created: 2020-08-03 12:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 966cb76c448f761c7b51ead8e96ebd8a SHA-1: 8eaca53f425b6ab83626eb7fd4df685ff8bfee28 SHA-256: dfe74cb283027ac452d66c7c4a881780f42dfc3df960396d046d469f6270a5fd
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bestiario+cortazar+pdf. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains references to the malicious URL and appears to be a lure.

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=bestiario+cortazar+pdf
    • http://files.thesharpeningstone.com/uploads/1/3/0/7/130776619/fifovoxatesaku-wevavojiranuneb-doligaluvisuli.pdf
    • http://files.dubboanglicanchurch.org/uploads/1/3/2/7/132740838/8490149.pdf
    • http://favobabig.byrongnd.com/uploads/1/3/2/7/132712207/935f32a4.pdf
    • http://files.chinookaircraftsales.com/uploads/1/3/1/1/131163712/bajelewiroborerulit.pdf
    • http://files.robowranglers148.com/uploads/1/3/0/9/130969065/276098b4e95b1.pdf
    • https://cdn.shopify.com/s/files/1/0445/5848/3620/files/the_western_humanities_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/pavuxokuxoxudobufa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/17437228252.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/xosijudodaposigetitu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7183/1193/files/70247086765.pdf
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/77150207418.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/1995_prowler_travel_trailer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/junji_ito_human_chair.pdf
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/dipovibomigovijunixizijug.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_off00006202.bin
b074c8a05c34943391933d291ff04627eb32b4eb366a23acd7c5eb9f2c47d5f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6202 5216 bytes
font_01_sfnt_off000073db.bin
8e90586b3cf654f7fce50619bfdf3f55f891e5d80383771015ff1b87816048b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73DB 9824 bytes

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