Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15c548406b05657…

MALICIOUS

PDF

76.0 KB Created: 2021-03-07 22:52:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f6b9f3a3052b51d1bdba749ee86744e SHA-1: 9f6d53678d482672ad08aae16f82fee81a8df3ea SHA-256: e15c548406b0565783b21f028f7cd5d28c86179b5c8b11598b09df0b9de03ad5
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 high likelihood of malicious intent. It contains an embedded URI pointing to 'mezovuduw.ru', which is likely used to host a phishing page or download a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to a book summary.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/aws?utm_term=caps+for+sale+book+summary
    • https://lafefetakizin.weebly.com/uploads/1/3/2/7/132712235/zizekarinex-wuwafar-joponowirafi.pdf
    • http://gagerovovus.22web.org/pathfinder_bardic_performance_feats.pdf
    • http://nuxirofa.iblogger.org/how_to_make_black_nail_polish_by_mixing_colors.pdf
    • https://bikezurikol.weebly.com/uploads/1/3/4/6/134612173/7558450.pdf
    • https://kazowajobizitat.weebly.com/uploads/1/3/0/7/130775795/5005224.pdf
    • https://nifiwaratobiwe.weebly.com/uploads/1/3/5/3/135346776/4503dc.pdf
    • https://vumirexow.weebly.com/uploads/1/3/2/7/132740730/0ad37141036.pdf
    • https://vodefuba.weebly.com/uploads/1/3/4/6/134688083/begijowoxode.pdf
    • http://kuzexamipapoxip.medianewsonline.com/diary_of_a_wimpy_kid_free_movie_rodrick_rules.pdf
    • http://lazujifoxupa.getenjoyment.net/my_side_of_the_mountain_movie_free.pdf
    • https://kebolegenadudus.weebly.com/uploads/1/3/1/4/131454121/7791855.pdf
    • http://vipadobotisituz.mygamesonline.org/how_to_replace_schlage_keypad_battery.pdf
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/5a2dc.pdf
    • http://wedipum.mygamesonline.org/31971291946.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c8931489-9af3-433b-9e91-5e5f4eff9c3a/wuzadixojutivosuxu.pdf
    • http://gevitejivojo.rf.gd/26444296780.pdf
    • https://uploads.strikinglycdn.com/files/a4162ff2-e459-4a17-8d2c-83dbca708735/titipegurufej.pdf
    • http://vegozamefokim.rf.gd/84081614193.pdf
    • https://uploads.strikinglycdn.com/files/21e4bb31-e7f2-461c-814b-b59df77112c8/nursery_rhymes_lyrics_sleeping.pdf
    • http://lagadasisipas.rf.gd/16328062153.pdf
    • https://uploads.strikinglycdn.com/files/91bb4192-9f75-484c-9af5-2073b89c742a/xokerufologopejeleze.pdf
    • http://padubarejibuso.rf.gd/11381091646.pdf
    • http://gosewobagoxubok.rf.gd/f1_visa_interview_questions_and_answers_nairaland.pdf
    • http://ruwapebubori.epizy.com/adwords_exam_answers_2018.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_off0000eccc.bin
86cbf3fa1519f1ecf7f8a44badd904d866d672cc9d14e8944818272aa8001f0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECCC 5256 bytes
font_01_sfnt_off0000fe9c.bin
51228c9820ebc6ce70916d1772edebf0b70d1d3fb44bc63bd349079f93652801		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9C 10596 bytes

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