Malicious PDF — malware analysis report

Static analysis result for SHA-256 6967da220bf12df4…

MALICIOUS

PDF

77.3 KB Created: 2021-03-13 19:00:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 592b4ea4e362a7c1c2f22b20231e83e3 SHA-1: 7209963c9ba47ef2710082646c29e32cd5fff8a1 SHA-256: 6967da220bf12df4e5ceb3417f488b4b344cec6e9f4b6729701b5ed510e26eee
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-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://jottigo.ru/wix?keyword=acid+rain+webquest+answer+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378153/normal_5feb9d5456f80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445570/normal_6039e234d0487.pdfIn PDF document text
    • http://jolujunutido.iblogger.org/ziselilamuvevefom.pdfIn PDF document text
    • https://wekexobesunolo.weebly.com/uploads/1/3/0/7/130739288/1a578.pdfIn PDF document text
    • https://cdn.sqhk.co/razefudixid/eibhbie/duromax_dual_fuel_generator_home_depot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381297/normal_601cccf030dd4.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/zokifemevukinironamob.pdfIn PDF document text
    • https://vatatolomaz.weebly.com/uploads/1/3/4/4/134495066/84f9b3853ef976.pdfIn PDF document text
    • https://cdn.sqhk.co/sezunofubuzi/gjafgdD/masozesuxad.pdfIn PDF document text
    • https://cdn.sqhk.co/zapusukajev/fQ03nbS/tmnt_portal_power_mod_apk_revdl.pdfIn PDF document text
    • https://mirajaxudedina.weebly.com/uploads/1/3/0/7/130775596/4857603.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/a4a12a03-919f-4eee-862b-a5ae811d30fd/how_to_use_philips_universal_remote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8debffd-18a5-4545-84ed-6372f80b4474/apple_ipod_nano_4th_generation_bluetooth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f9aea7f-bf53-4df6-a2c4-885cd1d1c884/how_to_reset_asus_router_without_password.pdfIn PDF document text
    • http://runopokasuvi.epizy.com/metal_gear_solid_2_pc_manual.pdfIn PDF document text
    • http://zuzasuzojenox.epizy.com/59824089924.pdfIn PDF document text
    • http://nozosikela.rf.gd/harvard_reference_style_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19fceee0-9d94-486a-bcdb-b9b0b3edc225/do_traders_beat_the_market.pdfIn PDF document text
    • http://tuxefunuzire.atwebpages.com/what_size_bullet_does_an_ar-15_shoot.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_off0000f299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF299 5416 bytes
SHA-256: 6ec5a50f54d76f61a75e62ef7bc150743c3ea30f99a174faf5b666e9f004f0da
font_01_sfnt_off00010528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10528 10292 bytes
SHA-256: f23a3b6ab815781891fcf7c02130bbfe7bd36bc89c8080fb4177479585d76708

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