Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad590231825e0c07…

MALICIOUS

PDF

70.6 KB Created: 2020-08-11 09:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9563bcb2142461c330460652ff95b31c SHA-1: 34b79b52266e2921e45dcbb0e716a5b01787b747 SHA-256: ad590231825e0c07db6ef83773c5a379d55063eebe48d6f241a66ea8124ddf09
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Verbal ability pdf for infosys' and the malicious URL 'https://ttraff.cc/pify?keyword=verbal+ability+pdf+for+infosys', suggesting a phishing lure. The presence of a link farm heuristic further supports the malicious intent of distributing links to external sites.

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.cc/pify?keyword=verbal+ability+pdf+for+infosys
    • http://files.luxurylodge.fi/uploads/1/3/0/9/130969993/b473ba17ac.pdf
    • http://files.tourstp.com/uploads/1/3/1/1/131163687/walirumumax.pdf
    • http://files.dedhamfps.com/uploads/1/3/1/4/131437932/bulurokij-sawulos-pinerepiku-semimuwulef.pdf
    • http://lebovon.monicaleeux.com/uploads/1/3/1/0/131070786/zidomufajiramoj-bevimodiv-rizonolofapit-sotaruvajodawes.pdf
    • http://files.delisodidit.com/uploads/1/3/2/3/132303061/vujosuxopibik-karimuzosososis.pdf
    • https://www.gamblingid.com/
    • https://cdn.shopify.com/s/files/1/0434/2461/2509/files/jodojesamemokejewalaravin.pdf
    • https://cdn.shopify.com/s/files/1/0437/2611/0885/files/58820286934.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/4583262623.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4968/files/sitarukabizowexakigizis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/sugesirodumewakowulif.pdf
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/voximejawetadowonevimive.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/59520763498.pdf
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/vikaxotutire.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/59398382637.pdf
    • https://cdn.shopify.com/s/files/1/0431/4310/2613/files/fundamentals_of_ceramics_barsoum.pdf
    • https://cdn.shopify.com/s/files/1/0433/5032/7451/files/soxasadimukowusewasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57189589950.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_off0000d49f.bin
35af1da5b53e84f4c50cf87142ddb4da9535f36abc56adbd975a43cd2dfc3f90
pdf-font-stream PDF embedded font (sfnt) at offset 0xD49F 5240 bytes
font_01_sfnt_off0000e681.bin
a7075d3e6d16c2a319189f4de695a002cfca33b0d60fb5b9ff48f7d576e43b1d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE681 11796 bytes