Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ba61b042bb8e99…

MALICIOUS

PDF

82.2 KB Created: 2021-04-07 23:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f791704f396d3fbdd6304d3a57e2f641 SHA-1: d697ab92a426fc21da6eeee94c72eb6d5b42339f SHA-256: 87ba61b042bb8e9992e79bc403f5a282479b37121b45ca87f9e99ab0b1a934d0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, likely for malware delivery. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of an external URI suggests the document's purpose is to redirect the user to a site that will likely host a malicious payload.

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://mezovuduw.ru/wix?keyword=sonic+4+episode+2+apk+no+ads
    • http://agencymedia-ig.com/black_and_decker_cordless_drill_14.4_volt_charger924sk.pdf
    • https://cdn-cms.f-static.net/uploads/4491410/normal_6038de03c1dba.pdf
    • http://lapitubemexidi.mywebcommunity.org/alicante_mapa.pdf
    • http://jenewazajasazu.getenjoyment.net/libro_amando_a_pablo_odiando_a_escobar.pdf
    • http://yourdesk.website/481503000167uupq.pdf
    • http://gupirigugorixuf.sportsontheweb.net/ffxiv_the_great_hunt_extreme_unsync.pdf
    • http://knitfqph.site/gedowurebokepusoibvp.pdf
    • http://bafiselavanebep.mywebcommunity.org/zaban.pdf
    • https://cdn-cms.f-static.net/uploads/4480880/normal_60566db27711f.pdf
    • http://nunobuzipame.medianewsonline.com/comparing_plant_and_animal_cells.pdf
    • https://cdn-cms.f-static.net/uploads/4476148/normal_5fea36a53419e.pdf
    • http://bonenipani.22web.org/how_to_get_cognitive_behavioral_therapy.pdf
    • http://burivuvuju.medianewsonline.com/talumefesufadoxopedi.pdf
    • http://xariketixagat.mypressonline.com/widorurabubofaz.pdf
    • http://fumexijana.getenjoyment.net/400_microgramos_a_miligramos.pdf
    • http://leyloften.online/prime_video_app_samsung_tvdnsgp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xepuzakudera.atwebpages.com/42751319862.pdf
    • http://fuvuvadut.onlinewebshop.net/movie_maker_free_download_for_windows_7_without_watermark.pdf
    • http://koraxirimaxodet.epizy.com/amleto_libro.pdf
    • http://jagomizaf.atwebpages.com/37782050306.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_off0000ff4e.bin
04d22ad0a8dcdab0ef5646ab968d92e69450c9ea4d7ae53db86c46995ebe4d40
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4E 5328 bytes
font_01_sfnt_off0001118e.bin
eb58b6fa31f258bad2f4a86e5ea11b951b74dddf904a7d6dede259d8da632ec8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1118E 12388 bytes