Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18521b97ba2c78b…

MALICIOUS

PDF

63.6 KB Created: 2021-02-19 13:39:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e2808e192ba538909416708e270d1288 SHA-1: 74c77ed977def9480fe687411e9aa4a75091c81a SHA-256: a18521b97ba2c78bab4d84494f3081bc776bedc551a8f57c8854787a42eb986a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=navy+seal+fitness+guide+pdf PDF link annotation
    • https://cdn.sqhk.co/xasakeza/HUOhiid/cake_recipe_without_egg_and_oven_in_marathi.pdfIn PDF document text
    • http://gabupexijek.22web.org/beamforming_transmission_bfr_beamforming_reception_bfe.pdfIn PDF document text
    • https://vunisanelebori.weebly.com/uploads/1/3/3/9/133999195/baa91ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412387/normal_5fe2abf60e9ae.pdfIn PDF document text
    • https://xijapesulole.weebly.com/uploads/1/3/4/5/134588017/79be0d666fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391915/normal_5fc6e018b9972.pdfIn PDF document text
    • http://ital-girl.space/nogivuzutokofarebebaku6h2s.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/LgjgjkC/96465584856.pdfIn PDF document text
    • https://pitubesisimebi.weebly.com/uploads/1/3/2/6/132681325/a2eee275b71346.pdfIn PDF document text
    • https://cdn.sqhk.co/turanexode/GzSvMie/idle_tap_strongman.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/5412106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371025/normal_600c1dd284f86.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/aaru_movie_telugu_video_songs.pdfIn PDF document text
    • http://bodapefazit.rf.gd/general_laboratory_safety_rules_and_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/anchoring_script_for_marathi_dance_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/98810199548.pdfIn PDF document text
    • http://zuronixo.rf.gd/atm_card_apply_format.pdfIn PDF document text
    • http://fisowafoz.epizy.com/punkte_notendurchschnitt_formel.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_off0000be9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9C 5244 bytes
SHA-256: 0dc68bdde143b696bffa7214ef18f08e1453697cb3d3232844c78ed2e4db2a7a
font_01_sfnt_off0000d0a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A1 9496 bytes
SHA-256: e6203bc451d2b2e5698c4d1ea5200c1dbdcb3de95ef45e8befa15a87f2501cd6