Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb3e2c0e0cde37bc…

MALICIOUS

PDF

82.5 KB Created: 2021-03-15 16:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fa5b5783f37a1a810b6c086af8841b86 SHA-1: 983acb6d2aa6d5d07cc281f59a8665da9686de0f SHA-256: eb3e2c0e0cde37bc3bdf23e8c4c1b2be8170ff074392034a17a9d2bc7b7722ea
126 Risk Score

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 0.9991

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://lozipotod.ru/wix?keyword=commercial+free+pandora+apk PDF link annotation
    • https://cdn.sqhk.co/totimujid/gjhxheW/battlefield_5_not_on_companion_app.pdfIn PDF document text
    • http://bamefidev.mygamesonline.org/lisujazurikik.pdfIn PDF document text
    • http://xuvepawa.iblogger.org/japetaf.pdfIn PDF document text
    • http://larokamexi.sportsontheweb.net/python_list_remove_all_none.pdfIn PDF document text
    • http://tezijexipilimo.getenjoyment.net/mubafizotujifezijuwupudo.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/zawukamu-nogem-ruxutaguzezef.pdfIn PDF document text
    • https://detopeda.weebly.com/uploads/1/3/4/3/134305225/b6b76c8f2bc2.pdfIn PDF document text
    • http://tazizinujumijoj.mywebcommunity.org/how_to_set_time_on_timex_indiglo_digital_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/jdihPie/81149420437.pdfIn PDF document text
    • https://zitavuzan.weebly.com/uploads/1/3/1/3/131379524/rufuvuvi-xeketagekari-kelafoka.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/Rl4iagd/penguin_pals_arctic_rescue.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/iso_iec_27001_information_security_associate.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/jhhbJjb/derujiz.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/AjepheI/nizubofubo.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/wazib.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/php_html_file_to_string.pdfIn PDF document text
    • http://nipizakevenuvis.scienceontheweb.net/bhaja_govindam_telugu_song_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kikanelomer.onlinewebshop.net/how_to_get_rid_of_pimples_and_scars.pdfIn PDF document text
    • http://bebovufuvuji.myartsonline.com/tufaponogaresoxowe.pdfIn PDF document text
    • http://pewesinelukaveb.epizy.com/hoarding_buried_alive_louise_former_model.pdfIn PDF document text
    • http://duvodix.myartsonline.com/lobifojijo.pdfIn PDF document text
    • http://dobejul.epizy.com/extent_report_version_4.pdfIn PDF document text
    • http://zowofiz.myartsonline.com/wabalugiginer.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE86 5092 bytes
SHA-256: a08701100314ecdf25e481a61b0790b4d0491d1d2ff640b3eb939f2d71b63698
font_01_sfnt_off0000ffc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC3 10956 bytes
SHA-256: c67ef6c51a30a5ca3ad1a357f05fadf332a5682662f826ebdfefccd2b4244678
font_02_sfnt_off0001255b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255B 16088 bytes
SHA-256: fff8b70d67420864e2a263fdbbaad35efae781e73a516d3cf38207748e8715b5

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