Malicious PDF — malware analysis report

Static analysis result for SHA-256 1543c46948102d3a…

MALICIOUS

PDF

78.0 KB Created: 2021-05-07 23:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 16468c59b5606b5d33f4fb3d0bf01fbc SHA-1: dd6ca5369f19c3f09d6c6d0071255f10f53e8333 SHA-256: 1543c46948102d3ac3411553e4d401b001f2047ae89f489560be3b73d9650a36
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 0.9995

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://botokaw.ru/strik?utm_term=dodge+avenger+battery+replacement+cost PDF link annotation
    • https://cdn.sqhk.co/tajiwikiter/fehdVgf/tennessee_titans_news_music_city_miracles.pdfIn PDF document text
    • http://specrazreshenie.com/misalufofabadokyh9bv.pdfIn PDF document text
    • http://jiwabozaxexe.mypressonline.com/20726300713.pdfIn PDF document text
    • https://cdn.sqhk.co/zetobazox/lQhdgdO/xuxix.pdfIn PDF document text
    • https://cdn.sqhk.co/rapedipular/idji8Ba/slicer_3d_view.pdfIn PDF document text
    • http://helpcreditscore.info/denon_avr-3313ci_reviewp305b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480584/normal_602840dc7a870.pdfIn PDF document text
    • http://wawesoja.sportsontheweb.net/pozanepoderuxavav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380540/normal_60097e0f110e5.pdfIn PDF document text
    • http://cherrypimp.online/346586351360s75l.pdfIn PDF document text
    • http://xidasetetobuge.scienceontheweb.net/aviva_stadium_map.pdfIn PDF document text
    • http://presentinsta.online/40100439671ydzpx.pdfIn PDF document text
    • http://whysmall.space/xovaguzoxagenukajinofapefbh4nq.pdfIn PDF document text
    • https://cdn.sqhk.co/wemerofada/gjeijtE/zovazofajap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474746/normal_5ffdae45619a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483870/normal_5fcac8d4c5e45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411480/normal_600a0a1af196e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/299265ba-f989-4dd9-bccc-f39d3f30e64f/how_to_change_a_kenmore_fridge_water_filter.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/stanley_fatmax_tool_chest_wheels.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/proceso_y_juicio_en_derecho_procesal_civil_mxico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/532801ec-588a-4aba-865c-23e0b07e5a7d/crosley_record_player_power_cord.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/ars_notoria_descarga.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

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_off0000f134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF134 5696 bytes
SHA-256: bcb182ddd2432284832f6f8de84cb98c6a92d13772aaab6dfa4b92fd246c7bbe
font_01_sfnt_off0001048e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048E 11000 bytes
SHA-256: 5316829adb4ddaa98fa8fc2bee6ca53d2a35ed33c8f30714cab1f32ce0807040

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