Malicious PDF — malware analysis report

Static analysis result for SHA-256 c96167ad5960d27e…

MALICIOUS

PDF

38.3 KB Created: 2020-08-22 12:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a2b61d76416213835ebd80570efcba6 SHA-1: 16767bab2d98005f04907053b03a1da422316917 SHA-256: c96167ad5960d27e519db7e81eca3cb9f2bcf419f5d8bf69c45b91bca1b40b47
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as dictionary resources, with the primary link redirecting to known malicious infrastructure. The document body itself is heavily obfuscated but contains the malicious redirector URL. This indicates a phishing or redirection attack designed to lead the user to a harmful site.

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=cambridge+dictionary+pronunciation+pdf
    • http://files.mrball.org/uploads/1/3/1/3/131398224/60739bc3.pdf
    • http://files.parklanestablesponyclub.com/uploads/1/3/1/0/131070434/fad7275acc0.pdf
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/4760360907.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/80348445436.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/rusolerun.pdf
    • https://cdn.shopify.com/s/files/1/0435/7154/4223/files/anxiety_disorder_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/basestation_3200_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5569/files/kudebubatekenukuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/english_dictionary_for_java_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0450/2516/5470/files/dimururexote.pdf
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/1267897445.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/tabletop_simulator_nexus.pdf
    • https://cdn.shopify.com/s/files/1/0435/2763/5096/files/doterra_on_guard_beadlet.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_off00005651.bin
c4e651e1bef7192ee6c762e1171ac5dda40a1965efd19d8a76a589c424da6030		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5651 5412 bytes
font_01_sfnt_off000068ae.bin
beb738c5d8f940e7ff866cb57035c129dcf7ff75c7dd94344c8aa774ee36aff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68AE 10284 bytes

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