Malicious PDF — malware analysis report

Static analysis result for SHA-256 808afb2f00fe1c29…

MALICIOUS

PDF

77.4 KB Created: 2021-03-28 15:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9207dca0c1a9a96ca91ef836c08147b6 SHA-1: 595c5479539cef9b0b68b8d068af4b1929f3468e SHA-256: 808afb2f00fe1c29c7b98ced3fefa131c9e4ee4c9f3ea2a12936a194bdb0964f
126 Risk Score

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 0.9993

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://jacksth.ru/wix?keyword=menoetius+greek+titan PDF link annotation
    • https://nitesefoxon.weebly.com/uploads/1/3/1/4/131453907/9082025.pdfIn PDF document text
    • https://goguzosuv.weebly.com/uploads/1/3/5/3/135343726/9642918.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/botimerubifeje.pdfIn PDF document text
    • https://risimapi.weebly.com/uploads/1/3/4/3/134321435/xugoluvumuzu-siwew.pdfIn PDF document text
    • http://xagakojitogiva.getenjoyment.net/dozasa.pdfIn PDF document text
    • http://ruxenawuxovogu.getenjoyment.net/balancing_redox_reaction_in_acidic_medium.pdfIn PDF document text
    • http://rowaxamapitowej.getenjoyment.net/sevopivebajax.pdfIn PDF document text
    • https://pozimifekof.weebly.com/uploads/1/3/4/6/134674510/mevadujozajo-kunivazamul.pdfIn PDF document text
    • http://xaraxag.mypressonline.com/80375792981.pdfIn PDF document text
    • http://zuzotolifewujex.22web.org/understanding_computers_today_and_tomorrow_16th_edition_free_download.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/zazelujeju/lejineweb.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/manual_central_telefonica_siemens_hipath_3800.pdfIn PDF document text
    • http://wasaxotudulolo.epizy.com/fb_video_er_for_pc.pdfIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_5c0fed8c68a8487880e85a5d6f5b22ec.pdf?index=trueIn PDF document text
    • http://juwukopegonamu.onlinewebshop.net/zerolemon_lg_v20_battery_case.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/how_to_use_the_h20_steam_mop.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/midagoxezijogifolexo.pdfIn PDF document text
    • http://jefazad.epizy.com/mapidaname.pdfIn PDF document text
    • http://kewetanetoza.atwebpages.com/hiv_aids_treatment_guidelines.pdfIn PDF document text
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_6d8a2ea72d4f4d4ab48b0468134388a8.pdf?index=trueIn PDF document text
    • https://36d3fe4d-ce77-4ecd-ae21-04b42370c250.filesusr.com/ugd/871c54_7e6a5d0a2d6a4f5799cb075df1bc9f81.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/fadigewelakoxufukuver.pdfIn PDF document text
    • http://jofisakukobi.rf.gd/active_listening_skills_nursing.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_off0000ee76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE76 4888 bytes
SHA-256: 1e78deb37be917df0a728c2a99453553ff9d48d15684227099440bd8f7a887c1
font_01_sfnt_off0000ff36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF36 12416 bytes
SHA-256: 7e19c8217385c5353940ae2cc6be3e69624e7ffc3a487ad7d37cfc276b034a75

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