Malicious PDF — malware analysis report

Static analysis result for SHA-256 88be9aed85b2f9c3…

MALICIOUS

PDF

85.9 KB Created: 2021-04-16 10:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93fb9475ebaaa089b8ac27dc36b3106d SHA-1: 96fb5effe5619cb947a3998cbb52849bcbb55211 SHA-256: 88be9aed85b2f9c32a006ab976e09c53a707196ff52996a8ea519aca2db53ca6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as search results for a popular TV show, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. No scripts were extracted, but the presence of an external URI and the overall detection profile suggest a phishing lure designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=the+crown+cast+season+2+prime+minister
    • https://cdn-cms.f-static.net/uploads/4370987/normal_601a2e632918c.pdf
    • https://cdn.sqhk.co/wagomito/ewbEZfw/pixel_warfare_zombie_2.pdf
    • http://kutejovanog.getenjoyment.net/tewixosetujabakexutesapeb.pdf
    • https://cdn-cms.f-static.net/uploads/4389604/normal_601e169fc3cbe.pdf
    • https://cdn.sqhk.co/wojidumezu/KgBRgjc/23480667025.pdf
    • http://lodomujimujug.mywebcommunity.org/biblia_nueva_jerusalen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7b905831-d696-461b-85a9-9b100cc54662/50890193382.pdf
    • http://jafesok.epizy.com/47606874728.pdf
    • https://uploads.strikinglycdn.com/files/ad112e9e-5fac-41a5-852a-07c6f21e86bc/dell_optiplex_9010_drivers.pdf
    • http://kepawomokatuke.myartsonline.com/mathematical_reasoning_mcqs.pdf
    • https://uploads.strikinglycdn.com/files/34fc2862-94ba-4b02-b078-70b079a9a30d/how_much_water_does_a_speed_queen_front_load_washer_use.pdf
    • https://uploads.strikinglycdn.com/files/5203a7c6-6c1d-4df2-959c-9794b43794e8/fomewulodoxogavuf.pdf
    • https://uploads.strikinglycdn.com/files/ae7b7420-52cb-4cf9-885f-df4e29649df8/how_does_emdr_work_video.pdf
    • http://dilezupuforew.epizy.com/3044320417.pdf
    • http://kimoviranonaf.onlinewebshop.net/wovodagifarukoruwutubetiz.pdf
    • http://sefowolo.atwebpages.com/xuludipo.pdf
    • https://uploads.strikinglycdn.com/files/2a040528-cc89-4028-a9af-1c1ac5f9acf8/9391966439.pdf
    • http://togugufi.epizy.com/gossip_etymology_oxford_english_dictionary.pdf
    • https://uploads.strikinglycdn.com/files/0266ae59-0377-49bb-937e-ab703122ddce/zuvekevemirekukenija.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_off0001105c.bin
e20df3bbf403e764d56fce9c81e3ec32a72c2d75b6f1bdf959af47fc80b52270
pdf-font-stream PDF embedded font (sfnt) at offset 0x1105C 5312 bytes
font_01_sfnt_off00012258.bin
a49480dcc502c4dd9def58cfb6ab44d9dd3deb98a17617c5199b805d2c9fe795
pdf-font-stream PDF embedded font (sfnt) at offset 0x12258 12044 bytes