Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea45569e8209ab9c…

MALICIOUS

PDF

80.3 KB Created: 2021-06-14 01:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bfe40dbacbf36ef89871fea6ea838e5f SHA-1: c6653e14fb6fa26221cd57b1fa8b7728eead49a2 SHA-256: ea45569e8209ab9cd4425c772069918a0c61346aab244186e1a67d3a833687ea
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://infrive.ru/pbw?utm_term=pokemon+revolution+shop PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416305/normal_5ff0d00281ed1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_60468e1d3e3e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471252/normal_6046808112e84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416143/normal_602029f349413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486748/normal_60435f9b7cbf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421215/normal_6044bb95704bd.pdfIn PDF document text
    • https://tizamanana.weebly.com/uploads/1/3/4/8/134877207/2619698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387036/normal_60b8616acfb07.pdfIn PDF document text
    • https://vexinafofonazes.weebly.com/uploads/1/3/1/8/131871992/2005682.pdfIn PDF document text
    • https://pokemonrevolution.nIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vowetegaperi.pbworks.com/w/file/fetch/145045305/76765315746.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8107037-20a2-4b61-913b-75d9264497f2/mizazidakukiwesewixus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f17b45f6-b166-4b33-8737-b80dcf7521a0/maytag_2000_series_washer_disassembly.pdfIn PDF document text
    • http://sonubugu.pbworks.com/f/a_serbian_film_trke_dublaj_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d09111b2-3e4d-4c78-b31a-8c3aa84a1ba7/how_to_tell_if_your_air_conditioner_compressor_is_bad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51fde241-f8cc-4179-9658-c026b34aadfc/in_what_order_should_you_watch_sword_art_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7da9a274-4615-4f3b-866d-9825b8b1363c/what_happens_if_you_pour_concrete_in_freezing_weather.pdfIn PDF document text
    • http://kavuruxu.pbworks.com/f/gedalopapapofol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e8f4e5b-c055-4dd6-8a7f-a3b4c28a189b/zufixelimegivopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7588a33f-1ee8-4d0e-b5d7-f18665a87cb9/acordes_de_guitarra_para_esta_tarde_vi_llover.pdfIn PDF document text
    • http://rupebaxo.pbworks.com/f/89911728639.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_off0000fa60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA60 4976 bytes
SHA-256: 1f19e5c8ad26c35af36da993fe93cc4e24faaea796dd4ec0b17ca912794deddc
font_01_sfnt_off00010b2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2F 12108 bytes
SHA-256: 2b096606290f9284f0cdd82bdbaf5d318d79f6a3b7d0a287ea19b26053e7d9d1

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