Malicious PDF — malware analysis report

Static analysis result for SHA-256 368e4e9bac0b383e…

MALICIOUS

PDF

89.9 KB Created: 2020-12-29 22:01:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 758d2f590c0017b1c7f2ca0a4b8a35c4 SHA-1: 10e320337b474ad414038cf405eaf5a874a3a911 SHA-256: 368e4e9bac0b383e04005d6a4c4c6efcff9705eb98decf6a8a92e9ec23869416
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that, when visited, likely leads to a phishing page or a malware download. The document body, though heavily obfuscated, contains text related to a movie title, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffnew.ru/strik?utm_term=watch+north+and+south+patrick+swayze+online+free
    • https://cdn-cms.f-static.net/uploads/4451567/normal_5fbb2f5727627.pdf
    • https://cdn-cms.f-static.net/uploads/4444643/normal_5fae944cf40a3.pdf
    • https://cdn-cms.f-static.net/uploads/4413228/normal_5f9bfc8b96e5f.pdf
    • https://cdn-cms.f-static.net/uploads/4477139/normal_5fba65d1ce3c2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/face3848-cd9e-4d7d-8b29-f2f843e73668/country_music_radio_stations_near_me.pdf
    • https://uploads.strikinglycdn.com/files/e9f3f84a-8824-4ee4-857d-095aca59aa57/dilbert_comics.pdf
    • https://uploads.strikinglycdn.com/files/559d39e1-4e16-43ff-a96d-6df4b555ebbc/xufetosuzapabazavaloji.pdf
    • https://uploads.strikinglycdn.com/files/9fd7a6fb-7ebd-435e-9d62-6ee7c63384ed/15313237059.pdf
    • https://uploads.strikinglycdn.com/files/05e8818d-0031-4b72-bcc7-1e7ba61b7ece/zaxesezukifefajogerejunu.pdf
    • https://uploads.strikinglycdn.com/files/8f5378cc-d8ce-4cca-a907-584b3f991f7c/fundamentals_of_physical_acoustics_blackstock.pdf
    • https://uploads.strikinglycdn.com/files/dbd318e0-38bb-4335-bc51-5a85faf7da44/yugioh_mai_valentine.pdf
    • https://uploads.strikinglycdn.com/files/96e0e279-7574-45a0-a8bc-50e41b56f5ab/44039814529.pdf
    • https://uploads.strikinglycdn.com/files/2b1bef21-ea29-41a0-9317-5be7cd348ddc/vupidukabixawij.pdf
    • https://uploads.strikinglycdn.com/files/85c35c02-45a9-4678-aba4-b3af4c978fad/53846295355.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e1a.bin
61f4242e8a62ba929f26c6163fd2a5eaba26b8e1ebdc1190b1b32794ad857381
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1A 5564 bytes
font_01_sfnt_off0001312e.bin
0eb8fbb65423d2adb1b7ec435c3b312e84ea414aa59c27277c84398a2d68765e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1312E 12324 bytes