Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d350caea689874…

MALICIOUS

PDF

42.4 KB Created: 2020-08-11 00:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd0978f1c7931158e97839a649d4b8ee SHA-1: 2806cea6020211842d372afae54b510f3154f70e SHA-256: e0d350caea68987445200edc58d6372ba2e30ca468efb7fde3da882cfafac499
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=omission+of+articles+rules+pdf', suggesting a lure to trick users into clicking a malicious link. The ML classifier strongly supports the malicious verdict.

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=omission+of+articles+rules+pdf
    • http://files.southdakotatogether.com/uploads/1/3/1/4/131453904/zunexara_tepos_soweseb_luribixarorigu.pdf
    • http://sofudadu.infinityscarvesbyjanet.com/uploads/1/3/2/6/132695471/jebozisaduba.pdf
    • http://woketikip.writingtotheworld.com/uploads/1/3/0/9/130968931/xikajudoviliwexor.pdf
    • http://masuz.anti-slammer.com/uploads/1/3/0/8/130814017/pofor.pdf
    • http://muxaxi.rolesvillehsband.com/uploads/1/3/1/0/131070161/debozek_rofojumolusope_sudegoruk_mibevegeru.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2679/files/24329761632.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/karugizomobijuparel.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/81555065329.pdf
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/68159072562.pdf
    • https://cdn.shopify.com/s/files/1/0433/2224/5273/files/wayne_dyer_change_your_thoughts.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/definition_of_knowledge_management.pdf
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/ignition_system_in_automobile.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5099/files/95126007529.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/49018710809.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/97093604981.pdf
    • https://cdn.shopify.com/s/files/1/0433/1044/8795/files/88288775270.pdf
    • https://cdn.shopify.com/s/files/1/0437/0661/3912/files/96790482223.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_off000068b1.bin
34a5e8e7b2881511a1446171f6e6f8dc6f59b00d01a19f5177e2f648fb7e2194
pdf-font-stream PDF embedded font (sfnt) at offset 0x68B1 5328 bytes
font_01_sfnt_off00007aa6.bin
2f9ab5393dd06c570d63131a103c2d2c9e3034cd8bb2a355a889220f3dc9d9b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA6 9992 bytes