Malicious PDF — malware analysis report

Static analysis result for SHA-256 00df10a627b2f729…

MALICIOUS

PDF

77.3 KB Created: 2021-03-25 00:49:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b93bd36b75c7127c55544e159876f9a6 SHA-1: 51c2dc345f0381cda13fcf81478b9a5b034c1be8 SHA-256: 00df10a627b2f7298ddd5e0e839ca57f6f2f0227d207f5d4f718deeb30acf2bc
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 0.9996

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://lozipotod.ru/wix?keyword=amy+schumer+book+pdf PDF link annotation
    • http://wamuwosola.mygamesonline.org/cirque_du_freak_books_read_online_free.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/city_of_bones_cassandra_clare_shadowhunters.pdfIn PDF document text
    • http://mavigawika.scienceontheweb.net/momudono.pdfIn PDF document text
    • http://sifinujox.sportsontheweb.net/endocannabinoid_system.pdfIn PDF document text
    • https://cdn.sqhk.co/dumudegurit/8N1hjeY/52322664987.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/dnd_5e_best_druid_feats.pdfIn PDF document text
    • http://guketaz.iblogger.org/89077555601.pdfIn PDF document text
    • https://pesadosopovito.weebly.com/uploads/1/3/4/2/134235692/10bfec140.pdfIn PDF document text
    • https://tugixafebav.weebly.com/uploads/1/3/2/6/132681891/ziboviv.pdfIn PDF document text
    • https://cdn.sqhk.co/dutararopat/bicpge4/lobomikovojewupejikupige.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/4489408877.pdfIn PDF document text
    • http://xazapefunel.getenjoyment.net/tiger_census_2020_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://porekeb.epizy.com/padovijaravotatup.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/revulorevobigalo.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/razularibenotugetu.pdfIn PDF document text
    • http://misutiwovodifid.rf.gd/52092023098.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/euphonium_sheet_music_popular.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/structural_interpretation_of_seismic_data.pdfIn PDF document text
    • http://nilidax.epizy.com/47065677203.pdfIn PDF document text
    • http://bitujiduruv.myartsonline.com/xasegot.pdfIn PDF document text
    • http://lusiromipu.epizy.com/facebook_character_analysis_template.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_off0000f009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF009 5448 bytes
SHA-256: c3c039b3cea84d2ddde243e9e6cebfb2f62256b8415a0d2d351697ea2f473dbc
font_01_sfnt_off00010277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10277 11076 bytes
SHA-256: 0e9b57f863b9784a455393c8f0dca7d90a91a82bdef61961b73309b6f276b202

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