Malicious PDF — malware analysis report

Static analysis result for SHA-256 d009200d19183c56…

MALICIOUS

PDF

82.1 KB Created: 2021-03-18 21:54:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fc603c540e143100960c0e263e880cb7 SHA-1: 59a90d6950b909c3e683fdf6cff156666395640e SHA-256: d009200d19183c5663d70504ad95576da413d59a7e93da51961629d04565d68a
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-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://jacksth.ru/wix?keyword=recycle+number+4 PDF link annotation
    • http://wivuperafuzo.mypressonline.com/how_to_fix_gas_stove_not_lighting.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403680/normal_6025628cb7056.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/sonoma_county_busses.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491945/normal_6047b17978f03.pdfIn PDF document text
    • http://webmastervlad.ru/jifujevqr2dm.pdfIn PDF document text
    • http://femetorisufi.sportsontheweb.net/xumubeguvuf.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/fepuramameziviju.pdfIn PDF document text
    • http://sejunirawor.22web.org/assassins_creed_conversation_icons.pdfIn PDF document text
    • http://dubetones.22web.org/napakutisetenaritadi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499984/normal_60326985da4e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443602/normal_6034201045148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_60396865b0f1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497368/normal_602e8549e2413.pdfIn PDF document text
    • http://socialwave.me/how_to_write_a_poem_about_yourself_in_third_personagyu7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387919/normal_5ff50ae1cd860.pdfIn PDF document text
    • http://oneitstore.pro/what_is_narrative_writing_and_its_elements3k30o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473359/normal_6039391eed70f.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
    • http://zolunevo.epizy.com/mivataxomodi.pdfIn PDF document text
    • http://bagomurugidapig.epizy.com/how_to_use_a_singing_machine.pdfIn PDF document text
    • http://xupewosupegosax.epizy.com/limesurvey_design_templates.pdfIn PDF document text
    • http://modunozig.rf.gd/affairscloud_april_2020.pdfIn PDF document text
    • http://zerujafulo.rf.gd/wow_assassin_rogue_pvp_guide.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_off0000f61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61B 4536 bytes
SHA-256: 0c7623b90b9c2439afe50d4d3cce97d96b39db8a2c61600939b19cd00558963b
font_01_sfnt_off0001056d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056D 11220 bytes
SHA-256: 878de4ea884303d806642689bb97bf5e06e7ad30e8328d6c5d6fc4540cdd652c
font_02_sfnt_off00012ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BA1 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.