Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f9e80e3693dc9c…

MALICIOUS

PDF

303.1 KB Created: 2021-04-07 02:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4c99c75460ef0e47a117980dbaffbb0c SHA-1: 57d6fffc4425b9255fd371311d483e1314e4d633 SHA-256: 08f9e80e3693dc9cab2a7c03838ee1c10e0fe64c1943c929580cba9262ffe54b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query, likely intended to trick the user into clicking it. ClamAV and an ML classifier flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or credential harvesting attempt, potentially leading to further malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9831

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/wix?keyword=apush+chapter+8+guided+reading+answers PDF link annotation
    • https://cdn.sqhk.co/kegimovotol/jf3IjgZ/bajenaxuvoxinofexawalurom.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/ageghib/lapogete.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/OoSidgg/jusevekis.pdfIn PDF document text
    • http://temppicture.xyz/vba_excel_2020omckk.pdfIn PDF document text
    • https://cdn.sqhk.co/litanamamusi/d85iggj/top_100_songs_of_the_80_s_youtube.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/iphone_bedtime_alarm_soundsjhftv.pdfIn PDF document text
    • https://cdn.sqhk.co/diratukuz/iahfiiZ/90_s_country_music_radio_stations.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/igngfm8/20718930808.pdfIn PDF document text
    • https://cdn.sqhk.co/kimorotadopo/egchegj/41105461253.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/icgfmgi/decoracion_halloween_salon_clases.pdfIn PDF document text
    • https://cdn.sqhk.co/guvelebul/iaihAgi/kozusetozixidi.pdfIn PDF document text
    • http://lavkavkusa.store/viwepuna59fgf.pdfIn PDF document text
    • http://leree4.club/super_dragon_ball_heroes_zamasu_revived3nr2n.pdfIn PDF document text
    • https://cdn.sqhk.co/moxibusas/SifgdMY/37189931305.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fofanab.epizy.com/91490575977.pdfIn PDF document text
    • http://zumewozuzetarun.epizy.com/zuvodonefojonemeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a260633-b060-4955-92d6-2dfe7db24438/suguwufil.pdfIn PDF document text
    • http://mavafakubew.epizy.com/biohazard_4_game_for_android_phone.pdfIn PDF document text
    • http://rosunugi.epizy.com/86641949479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff628185-f31d-4281-a774-9440aee2aaa3/8460233995.pdfIn PDF document text
    • http://fisafowuvugedug.rf.gd/libro_para_hacer_aviones_de_papel.pdfIn PDF document text
    • http://kowatiwazeferov.epizy.com/deguvibetowonuwisod.pdfIn PDF document text
    • http://baruluzibovog.epizy.com/fepumebi.pdfIn PDF document text
    • http://xikepilapap.rf.gd/41370344991.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_off00046f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46F04 5580 bytes
SHA-256: 816a0270192ac7e15d4cafb7d55082eebcc35e1d4d5b095baccc51b574dcc106
font_01_sfnt_off00048205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48205 12676 bytes
SHA-256: f2e1db8ce487ec3f9a9e05f74f7e3fc1a2a5cfeea730adc3a5ca92ba9ce00527

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