Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb3623c9e0a7207…

MALICIOUS

PDF

81.3 KB Created: 2021-03-18 00:45:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 123ea4d31a867f232bff41c2f7344ef0 SHA-1: ba54a97285e9d70dc59f14b4b744629cb1a6c6c6 SHA-256: 9eb3623c9e0a7207c68101696860c903aab0a34a1d5a073449340eb4a8a55eab
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/123?utm_term=electrotechnics+n4+textbook+answers
    • http://jixazepo.mywebcommunity.org/metric_bolt_grade_chart.pdf
    • http://muzibatixabu.mypressonline.com/how_to_reset_brother_p-touch_1180.pdf
    • http://riniwodifole.medianewsonline.com/luliladigesiwolexite.pdf
    • http://jolijivik.scienceontheweb.net/76966005816.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_b688189546e148e88a8d2b90a0abbae7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cc09d468-edea-4657-a3d9-9ee6400b7580/how_to_change_a_honeywell_air_purifier_filter.pdf
    • https://s3.amazonaws.com/paropabaru/lego_marvel_super_heroes_character_guide.pdf
    • http://wudemexa.myartsonline.com/lagazogomediluk.pdf
    • https://s3.amazonaws.com/wonumafubij/budodudibevesiv.pdf
    • https://uploads.strikinglycdn.com/files/1edc23bb-06eb-4e99-ac52-bf417c2d450a/beats_by_dre_wireless_headphones_studio_3.pdf
    • http://torejejowomu.myartsonline.com/jukidojomixojipitu.pdf
    • http://rebipilu.epizy.com/yahoo_mail_app_free_apk.pdf
    • http://tuzuxutetug.atwebpages.com/garmin_watch_release_dates_2020.pdf
    • https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_3a1f7f82380448c0b8f6c7bfced626f6.pdf?index=true
    • http://tanijug.rf.gd/dogiwavoweje.pdf
    • https://s3.amazonaws.com/sobaketemu/banana_pi_bpi-_m3.pdf
    • http://luzutajezilako.rf.gd/english_for_everyone_comma_rules_answers.pdf
    • https://s3.amazonaws.com/bejikefowu/11907459333.pdf
    • https://161abad2-7de2-49bb-9904-d6e2a620a662.filesusr.com/ugd/2eec94_60d161bee6af4bf9b3c1a4d0d6258da5.pdf?index=true
    • http://lowelomavojezi.myartsonline.com/convulsion_tonica.pdf
    • http://pumatelikowe.epizy.com/samsung_model_rf26hfendsr_ice_maker.pdf
    • http://rexefobixavater.myartsonline.com/bncc_fundamental_1.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_off00010065.bin
da701eebc215202493b6f41eec229cb4a5ceacbe1a935e70a4866644b890567d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10065 5296 bytes
font_01_sfnt_off00011286.bin
00df425a84f829ea069e253c8f85d84a7fbdee4ecd4dc0736813b5c98f08190d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11286 10796 bytes

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