Malicious PDF — malware analysis report

Static analysis result for SHA-256 a096abd1ca1d9d79…

MALICIOUS

PDF

85.8 KB Created: 2021-04-07 20:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfa190d8795c7e1d73f15e2284eabdaa SHA-1: 801369ecd8e62e90a690c84edfd793c49af0ec33 SHA-256: a096abd1ca1d9d7927a7c503bf633014c997505f31814014c591df4c9a9e6a15
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'https://ponafet.ru/award?keyword=workout+plan+for+weight+loss+at+home+pdf', which is likely a phishing lure. The document body, though heavily obfuscated, contains text related to workout plans, reinforcing the lure. No scripts were extracted, but the presence of external URIs suggests a potential for further payload delivery or redirection.

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://ponafet.ru/award?keyword=workout+plan+for+weight+loss+at+home+pdf
    • http://xapepinozex.22web.org/envision_math_grade_3_answer_key.pdf
    • https://cdn-cms.f-static.net/uploads/4495999/normal_604cc4de370a3.pdf
    • https://static.s123-cdn-static.com/uploads/4461761/normal_5fdfc1525c796.pdf
    • https://cdn.sqhk.co/tekemozuj/QGjhs0J/64624243116.pdf
    • https://static.s123-cdn-static.com/uploads/4414334/normal_5feb07d151bf8.pdf
    • https://cdn.sqhk.co/jovowosifo/Hhcjgib/zarchiver_pro_mod_apkpure.pdf
    • https://cdn-cms.f-static.net/uploads/4424349/normal_60369e5a9ac28.pdf
    • https://cdn-cms.f-static.net/uploads/4417129/normal_6062f9ef3fded.pdf
    • https://cdn.sqhk.co/dubutemaruxu/WShaYgi/epic_games_rocket_league_not_working.pdf
    • https://cdn.sqhk.co/molavagew/uggibhe/70336786679.pdf
    • https://cdn.sqhk.co/zikufivol/iietjhk/next_business_tycoon_3_mod_apk.pdf
    • https://cdn.sqhk.co/riroxale/jjjdRvi/xamujelipe.pdf
    • https://cdn.sqhk.co/dogutadova/OjeLAgd/paradise_bowling_lanes_metairie_la.pdf
    • https://cdn.sqhk.co/bigulikexupa/aiepfPS/air_force_special_operations_weather_officer.pdf
    • https://cdn.sqhk.co/gidenateg/hdzPght/32659656830.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://vaxomuterok.epizy.com/51172346046.pdf
    • https://s3.amazonaws.com/zizene/jegak.pdf
    • https://s3.amazonaws.com/dotivaf/alexandro_quereval_music.pdf
    • https://s3.amazonaws.com/xisefowu/how_long_does_an_apple_tv_remote_battery_last.pdf
    • http://vafipisepofowo.epizy.com/91228657456.pdf
    • http://sepenoneregepe.rf.gd/aadhar_card_form_new.pdf
    • http://depegiwisa.epizy.com/27285286370.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_off00010304.bin
4c87f381c2db3b942e1c9a71227f45153ef4b7db1d068cd960586e1957db37d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10304 5504 bytes
font_01_sfnt_off000115ae.bin
f633a711aec07fac9038cf6d9b1fbe4bb7864859e892e241ab0670c4cd467b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115AE 10880 bytes
font_02_sfnt_off00013aec.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AEC 4324 bytes

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