Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e0ac879af7baa6…

MALICIOUS

PDF

84.2 KB Created: 2021-03-16 03:02:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 217d0bd402d35980bc70dc186355ee2c SHA-1: 6e6f08027f73dedca99b0f36589d8c2594c7a1a6 SHA-256: 97e0ac879af7baa60bd3b31d9e4cc94c4a5d0418d42d0ca89806b10def6d19fd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/123?utm_term=learning+functional+programming+in+go PDF link annotation
    • https://cdn.sqhk.co/letinumi/s2IWyhg/counter_strike_mobile_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/jdhaihF/sutujesumurewopinarolotu.pdfIn PDF document text
    • http://letuxegesilem.iblogger.org/cartoon_maker_photo_editor_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/0hjYlsJ/50037689470.pdfIn PDF document text
    • http://dimax-matrasy.ru/tekuwifijudigofosupuwisa8mf96.pdfIn PDF document text
    • http://strongcreditscore.info/starsector_starting_guidem5t16.pdfIn PDF document text
    • https://cdn.sqhk.co/numorolele/fQDgjsX/project_planning_program.pdfIn PDF document text
    • http://gijejidil.22web.org/muminazumuka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mogipenen.rf.gd/pijitevasudefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3bddc71-b9b9-4cf7-bbbf-a9d4ad5d6207/exerpeutic_900xl_recumbent_exercise_bike_with_pulse_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e0b7eb6-f4bc-41e3-aa26-350e09701c23/despertando_al_gigante_interior_epub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16b3910f-0665-41b0-928f-e2742e589d87/47428688571.pdfIn PDF document text
    • http://tijivetax.epizy.com/siwewijukapemegas.pdfIn PDF document text
    • http://tesoxukezeziles.epizy.com/vikaborufa.pdfIn PDF document text
    • http://fogetakid.rf.gd/71145059773.pdfIn PDF document text
    • http://wusumuforibit.epizy.com/8233100895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/837e2f27-f6c3-4ebf-b3b3-15faca93c1a8/diboxas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed0273f8-7f21-4524-8deb-4472526f1b0e/introduction_to_text_linguistics_robert-alain_de_beaugrande.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b25a754b-35c4-4a85-a8de-5cf558f7318c/sonumigajotenokurobalepup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93ffc334-6e7c-49ad-ab4f-56bf406cbd4b/60838794077.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_off00010a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A13 5100 bytes
SHA-256: ba99db07bacbaec16d45ac5b1c85fe46ee25d77f00d5d828eacb461baa39c966
font_01_sfnt_off00011b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B67 11808 bytes
SHA-256: 0b58c1f9062aba58be571532b27c952e0267996fe9d4a93fd8f390c65e72aa46

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