Malicious PDF — malware analysis report

Static analysis result for SHA-256 057fd2ffba93d5d3…

MALICIOUS

PDF

79.6 KB Created: 2021-03-31 22:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eb698ce953ae105dc82b43fcddcfb56 SHA-1: 2cc88630a1a89333846af0252fbc756ddaa21a1f SHA-256: 057fd2ffba93d5d334db0657b2e496af33933b5cc60900e4995d4e00e60486d1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a domain associated with phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malicious content disguised as an award or notification. No scripts were extracted, but the presence of external URIs suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/award?keyword=manual+apicultura+pdf+espa%25C3%25B1a
    • https://cdn.sqhk.co/gobuwovuv/crhjchf/safukexojuzugo.pdf
    • http://converstarget.ru/screwtape_letters_studyaj9b5.pdf
    • https://static.s123-cdn-static.com/uploads/4385612/normal_5fedd4cb797cc.pdf
    • https://cdn.sqhk.co/lasesekov/hjijib8/52811954798.pdf
    • http://216tilford.com/what_is_isentropic_efficiency_of_centrifugal_compressor372wc.pdf
    • http://obmenkalnr.online/blockchain_tutorial_for_beginnersougoo.pdf
    • http://help-copyrightviolationhelpcenter.com/zejokudaro5yu20.pdf
    • https://cdn.sqhk.co/tuledapozato/iZqVhaj/popular_ringtones_2019_telugu.pdf
    • https://rafutukeri.weebly.com/uploads/1/3/1/4/131453201/boseberutuv_xewilox_kubalopu_baxerumez.pdf
    • https://fewurigog.weebly.com/uploads/1/3/0/9/130969621/2327369.pdf
    • http://zhk-rekord.info/how_to_pair_jbuds_air_sportytqmt.pdf
    • https://mevepabazeme.weebly.com/uploads/1/3/4/0/134013418/114082.pdf
    • https://jiromozuno.weebly.com/uploads/1/3/5/3/135387519/7893806.pdf
    • https://cdn-cms.f-static.net/uploads/4366406/normal_601f53497474d.pdf
    • https://cdn-cms.f-static.net/uploads/4394066/normal_602e23762e202.pdf
    • https://cdn-cms.f-static.net/uploads/4387816/normal_60579508cb0ac.pdf
    • https://mafaredoli.weebly.com/uploads/1/3/2/6/132695491/61f3f3a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://mujujilunel.epizy.com/bell_bottom_kannada_full_hd_movie.pdf
    • http://sirevonigira.epizy.com/gudubatumudogela.pdf
    • http://segisubab.epizy.com/acsm_weight_lifting_guidelines.pdf
    • http://ronojegev.rf.gd/99044024205.pdf
    • http://telawusufolij.epizy.com/vebobupenilizuwemonadovap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec3c.bin
1529e8a3b67e507b66bbd781bbe06b0ebeae77ad8bc9560f32f17cd18146729b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3C 5136 bytes
font_01_sfnt_off0000fd76.bin
6749d37ce9eb670c7a77262fa0d1367878ae6bc4566efae01a8b475918664da8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD76 10864 bytes
font_02_sfnt_off000120f6.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120F6 4324 bytes

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