Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4e8b5c1eaf6218…

MALICIOUS

PDF

35.8 KB Created: 2020-08-28 12:04:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02699a78394d137551471ba3f09d19f0 SHA-1: 3d72f3ee8202b18573db9a5cceed22deced5fbf8 SHA-256: dd4e8b5c1eaf621899fb7fef37cfe02a5f0ec71ef75f1e0a4c1058731550fada
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes text suggesting a lure related to wealth ('Viva como un verdadero millonario pdf'). The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a likely phishing or scam attempt to direct users to malicious content.

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.cc/pify?keyword=viva+como+un+verdadero+millonario+pdf
    • http://lawonutav.studioeworldwide.com/uploads/1/3/1/4/131406687/favolibav-jaziforilo-witavazital.pdf
    • http://jetunax.calaverasarts.org/uploads/1/3/2/7/132741100/3500105.pdf
    • http://files.aoerecording.com/uploads/1/3/1/4/131407080/fakipoxafobifugev.pdf
    • http://nebaki.relaxandsucceed.net/uploads/1/3/2/6/132695384/823307.pdf
    • http://direbaka.ysk-chb.com/uploads/1/3/1/4/131406676/tamazemowesojimidal.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/network_security_firewalls_and_vpns.pdf
    • https://cdn.shopify.com/s/files/1/0431/3029/0327/files/abattoir_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/60793030859.pdf
    • https://cdn.shopify.com/s/files/1/0449/7971/6264/files/active_and_passive_fire_protection_system.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/fanupuredatob.pdf
    • https://cdn.shopify.com/s/files/1/0433/8325/9301/files/77623871426.pdf
    • https://cdn.shopify.com/s/files/1/0437/7313/2954/files/tagireb.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/bitibid.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6743/files/warhammer_almanach_mistrza_gry.pdf
    • https://cdn.shopify.com/s/files/1/0472/3055/0181/files/sustantivo_colectivo_de_ganso.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/brownells_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0456/9822/0188/files/fallout_4_ideal_quest_order.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_off00004bcc.bin
ca0fce304b834c9ce3839ae90fe75f548cb41b84822a8d173a6c992a8fd986f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCC 5148 bytes
font_01_sfnt_off00005d3e.bin
002795b9151f0d7e7c158fd840b4cedb9ae66fd9bb1bbc130d58b3c43846c380
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3E 11296 bytes