Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebef9deb7782b299…

MALICIOUS

PDF

98.1 KB Created: 2021-02-11 10:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3722d703b5c9a476fb0610d4302f292e SHA-1: fd4dc6074f3c2be22f8dc86c221699bedecda49e SHA-256: ebef9deb7782b299f0b922258bf111968461b432ab03d40ffdcf34979bb937bd
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs pointing to potentially malicious domains, suggesting it's designed to redirect users to phishing or malware download sites. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=phanerozoic+eon+climate PDF link annotation
    • http://lovechat24.club/23067282735ljuo8.pdfIn PDF document text
    • http://wevepizivato.22web.org/kerala_budget_2019_free.pdfIn PDF document text
    • http://instapodarok365.site/recharge_strength_prewoezckq.pdfIn PDF document text
    • http://abzac.me/64781239349hdjkv.pdfIn PDF document text
    • http://latencfsrt.space/46878512402g5qbi.pdfIn PDF document text
    • http://autoport76.online/5372896050bndlv.pdfIn PDF document text
    • http://tehnopolis.org/rexebisevifefi9gupm.pdfIn PDF document text
    • http://allostar.buzz/download_multisim_14.00cmjg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496811/normal_6008e7b36f9f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450046/normal_5ff3e582b6e4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402711/normal_602221fc52bfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_600d4af79ee14.pdfIn PDF document text
    • http://pojekofa.iblogger.org/nene_ambani_movie_songs_telugu.pdfIn PDF document text
    • http://ighelpcenter.xyz/vukoxamadonukivonivilezoz0cd9.pdfIn PDF document text
    • http://3bki.ru/balboa_short_story_by_sabina_murrayh5ht3.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/saziwijaxodav/breakout_edu_box_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/base_and_strong_adjectives_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/zudasigagujijekamopiwatux.pdfIn PDF document text
    • http://mukelobader.rf.gd/vulajipugu.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/free_canon_camera_connect_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/wopupij.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_off00013e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E05 4912 bytes
SHA-256: 0734f910c86bcefb2f92bfa6644f54d261334b3d0805e012868c09f41055c1c0
font_01_sfnt_off00014e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E96 13540 bytes
SHA-256: 73618b75d33b6d36887b5ffbda451063dec1c0d68a2bd8c5571dbe9135fea533

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