Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab384cc1d7087fce…

MALICIOUS

PDF

78.9 KB Created: 2021-05-19 02:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 33010b4debea57f8aebb05261f17df3d SHA-1: 861e70883c3fab5483c2f4c78f78619693e2891b SHA-256: ab384cc1d7087fcee48163f09682584b4771d2858501b7808643dc2bd99f1f68
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/strik?utm_term=java+1.7+free+download+for+windows+64+bit PDF link annotation
    • https://nujalujuxak.weebly.com/uploads/1/3/5/3/135347358/xupojurazabimi.pdfIn PDF document text
    • https://juvuvekogowara.weebly.com/uploads/1/3/1/8/131856935/legiwufurimodas.pdfIn PDF document text
    • http://tuwomisajam.iblogger.org/wordly_wise_3000_book_8_teacher_s_edition.pdfIn PDF document text
    • https://rizapomon.weebly.com/uploads/1/3/0/7/130739727/noduxexuk.pdfIn PDF document text
    • http://wisiripivi.22web.org/cdc_bubble_sheet.pdfIn PDF document text
    • http://baxogujefavug.iblogger.org/aaja_mahi_song_video.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c62d02dc-d33a-451c-9afe-2852d4682373/old_school_runescape_boss_hiscores.pdfIn PDF document text
    • http://kujazidi.epizy.com/punabate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/774a7818-140a-47c9-a529-e803ef09037d/mercury_outboard_repair_service.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/mathematical_formulas_free_download.pdfIn PDF document text
    • http://gexaforagugozen.rf.gd/hansel_and_gretel_get_baked_is_it_on_netflix.pdfIn PDF document text
    • http://jigopikuxulet.epizy.com/lezumifufalufo.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/fakarel.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/suxirazopegigu.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/96835364312.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e0407d-2144-4543-8944-9f045ef76983/walking_alone_at_night_in_the_city.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/my_cousin_rachel_trailer_ita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59567a41-1ed8-473f-af53-272226a2318a/titulos_y_operaciones_de_credito.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/seropalokemaw.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/best_rooting_app_for_android_7._0.pdfIn PDF document text
    • http://waboxizolomove.rf.gd/punjabi_hd_movie_site_name.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26cfed19-3048-4fee-a8a1-5f67c5c84ce1/63379195897.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/17743936416.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_off0000f579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF579 5588 bytes
SHA-256: 50fa6c0cf17cdda7c9d944b7878583a38fb55c1a09da4b87ded05017473d01a3
font_01_sfnt_off000108bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108BC 10896 bytes
SHA-256: daa03247168332ed88223fddaa4be87ec41ce46c560489fa45e3641e7acc32b7

Open this report in the interactive analyzer, or submit your own file for analysis.