Malicious PDF — malware analysis report

Static analysis result for SHA-256 a41a15c2aeec6297…

MALICIOUS

PDF

80.0 KB Created: 2021-03-10 06:03:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 85de38fe93d621302bc6421ec9e1fce1 SHA-1: b9857952239045682d6c9058fd61932051508e0f SHA-256: a41a15c2aeec629780d21d4d599d9d2d42edfdcbb971983cf91938552b58a023
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to 'https://ponafet.ru/123?utm_term=dungeon+world+guide+pdf', which is likely a lure to download further malicious content. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://ponafet.ru/123?utm_term=dungeon+world+guide+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384045/normal_5ffdfbc7694f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462727/normal_5ff84ae4dcf34.pdfIn PDF document text
    • http://nawireg.22web.org/46700689404.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416790/normal_60146ea8881d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fd1a866cd466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498392/normal_6011f646cd640.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448332/normal_5ff160c043923.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5fc5bae61bbce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409607/normal_6034d0f241995.pdfIn PDF document text
    • http://wokelegekak.66ghz.com/roninakatavaxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424029/normal_60175c54ec452.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470975/normal_5fecd3be50e5a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/karisubenozakodajane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/430892d4-0fbf-4df6-80e2-2b73aac54cc6/wuvunixoxuxasotano.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/vce_exam_simulator_crack_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/595eb972-ac6c-4b6b-93e5-5ba3c9c5d39a/zenufudojolazewewijuzabim.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/game_love_balls_apkpure.pdfIn PDF document text
    • http://luxopemuvoxu.rf.gd/xurumojajonimovezize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7ce70bc-51dd-41a5-b26a-917ba2625ebf/monotabidaxupevep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/067a44c6-0d29-48e6-aead-672df6d00bc8/34050910906.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/41525518196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/081e33d8-474f-4e16-8658-f1fe9a009b8e/how_to_put_belt_on_old_maytag_dryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/720744c1-a4ef-40ec-8f9c-2dae913121ed/is_the_movie_the_doors_on_netflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e0b7eb6-f4bc-41e3-aa26-350e09701c23/despertando_al_gigante_interior_epub.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/35392735145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4ed048e-9e7c-4021-b096-8de021a01d9e/1626091641.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD02 4912 bytes
SHA-256: 091312abe2775193dc1299fc1529e9f40fe7b1feb4313a081ac484a44c8271c6
font_01_sfnt_off00010de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE0 10644 bytes
SHA-256: 754d964e50d62f8d4cbe8acc7df2c762ec78d41c7810d6ac40590912353afc9b

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