Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb43ab96f8211c0…

MALICIOUS

PDF

80.3 KB Created: 2021-03-22 01:08:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: aef0c0a61cc0eb1262c5876152735d7a SHA-1: b08420b3681df8dd907e19772ad17e3630971a26 SHA-256: 2eb43ab96f8211c0500f9b5fdeaa5b8d785a31253184f533e0313fe55f764b95
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 0.9996

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://maypoin.ru/strik?utm_term=python+for+loop+list+comprehension PDF link annotation
    • https://cdn.sqhk.co/terasovo/hIJLTUK/49023247328.pdfIn PDF document text
    • http://gaximivotekole.mypressonline.com/duxeroluxorakusoku.pdfIn PDF document text
    • http://o-karte-kopilka.com/what_to_invest_in_2021_stocks1zius.pdfIn PDF document text
    • http://zanartcc.net/8937152116xd70s.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/35564035748rvdnz.pdfIn PDF document text
    • http://good-production17.site/55994588141wf8om.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/aAohgid/calendar_december_2020_printable_free.pdfIn PDF document text
    • https://cdn.sqhk.co/butituguxur/agi8LQO/monster_race_3d_game_y8.pdfIn PDF document text
    • http://teachersaid.fun/how_to_calculate_drop_down_list_in_excel11owc.pdfIn PDF document text
    • http://invitesistem.ru/wamutefu5abej.pdfIn PDF document text
    • http://trafikcezaodebayisi.com/verizon_fios_ipv6_configuration7n64m.pdfIn PDF document text
    • http://golden-charm.ru/can_you_audio_from_facebook_videosi8zly.pdfIn PDF document text
    • http://romeita.space/kilezeginujilinofurot52yx.pdfIn PDF document text
    • http://ag-management.space/fazunukerunalofakuxapumen8j5.pdfIn PDF document text
    • http://citrus-fruit.space/62756346930ndir7.pdfIn PDF document text
    • http://simultaneously.space/evangelios_apocrifos_descargar_gratisutqnw.pdfIn PDF document text
    • http://magazok.top/638194081183pi0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7f2467c6-0d80-4e38-8df7-27624e0b9669.filesusr.com/ugd/e19533_a050b0c0d3214b5e8ac9a34f7160deae.pdf?index=trueIn PDF document text
    • https://ff19a39e-637c-4fc6-80cc-750024e8dd37.filesusr.com/ugd/d217e2_9768d1a8b472482a8f0145331f441ba6.pdf?index=trueIn PDF document text
    • http://kivozusemu.atwebpages.com/28351481372.pdfIn PDF document text
    • https://05f6fcc2-a4c7-4d5b-b58c-97b640a93f4d.filesusr.com/ugd/74147a_536fdb1cb44f439985056280aa1b8af2.pdf?index=trueIn PDF document text
    • https://f8071fb1-33dc-4bb9-9fe9-292e0ca0d861.filesusr.com/ugd/253000_22b4a312665b4e839239054c436aaf0f.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91D 5148 bytes
SHA-256: 3b3a61420fa29acc2d46beff9d38b77432cf1096ea203d2f1fba101be9279322
font_01_sfnt_off00010a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A86 11672 bytes
SHA-256: 185820c49ea9090ea1318cb57363f48ad032c3ee8872023f6d90277cdce5a3a9

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