Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d4c531d8befadd1…

MALICIOUS

PDF

71.8 KB Created: 2021-03-06 08:40:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 57f5b5150eedc7b26f7872551e4b6a95 SHA-1: 2c98419e2ed12e3ee2f2a9b4c6b9672c9fe50830 SHA-256: 8d4c531d8befadd18a0c50588b5962888341dfb949de8d1e40839ac2e328e3cb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • 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://xezojetit.ru/wix?keyword=ap+microeconomics+final+study+guide PDF link annotation
    • https://wozalaro.weebly.com/uploads/1/3/4/3/134326714/2e879b93.pdfIn PDF document text
    • https://cdn.sqhk.co/wigalefu/eadicVs/bluestone_state_park_weather.pdfIn PDF document text
    • https://vozuviwugil.weebly.com/uploads/1/3/2/6/132681927/6bae47175.pdfIn PDF document text
    • https://cdn.sqhk.co/tevimuwijile/Phcjc6P/taylor_swift_women_s_soccer.pdfIn PDF document text
    • https://vigijamavo.weebly.com/uploads/1/3/0/9/130968937/3044f5.pdfIn PDF document text
    • https://pomitowu.weebly.com/uploads/1/3/4/3/134389192/4c2bc5390a.pdfIn PDF document text
    • https://cdn.sqhk.co/zinoliwomi/Yhf7Oge/pibizunojenuzukog.pdfIn PDF document text
    • https://vanimiravupu.weebly.com/uploads/1/3/2/7/132710567/1822080.pdfIn PDF document text
    • https://jusatupu.weebly.com/uploads/1/3/4/6/134652681/5764969.pdfIn PDF document text
    • https://wefojomoki.weebly.com/uploads/1/3/5/3/135389947/gerij-palijos-tipaxogavosoze-vivaxux.pdfIn PDF document text
    • https://punizino.weebly.com/uploads/1/3/4/3/134327780/4699300.pdfIn PDF document text
    • https://cdn.sqhk.co/fujonexa/gihb8je/strategic_risk_management_examples.pdfIn PDF document text
    • http://lixodamevurobar.mygamesonline.org/sekebixi.pdfIn PDF document text
    • https://cdn.sqhk.co/nujusowidom/hSSgfic/43198686713.pdfIn PDF document text
    • http://netolenogafa.getenjoyment.net/74516326317.pdfIn PDF document text
    • https://dawutika.weebly.com/uploads/1/3/1/4/131407504/wipubise_vubulazixegivul_xuzuvofadino_bozilulusop.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/jcjihcO/new_york_city_fc_location.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/hiobPhg/64564845317.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/woridowar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2861cc29-32c1-4ed0-9e18-b85fd10a1aa0/worirotafegubakeb.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/how_to_change_oil_on_honda_3000_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d721bdb-e4b7-4e81-b329-49e098a69092/narefevejosixiziruw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1424d7a-7093-4903-85eb-600ff6d436a3/funko_pop_harry_potter_advent_calendar_2020_characters_list.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD15 5448 bytes
SHA-256: 55c1aa58d89a65d4cdbd5c64cad37f2d1ab0fa1c7dd8f3aadff2f8da6d590651
font_01_sfnt_off0000df7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7F 10604 bytes
SHA-256: 9e02cf6986b54973cbfaaa9c59eca188c5a70e30019c9eb21656a4401dd66833
font_02_sfnt_off000103cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CF 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3