Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ce7ef58e8f2c168…

MALICIOUS

PDF

74.2 KB Created: 2021-03-04 18:02:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8ca04f82ae257a93e37bbce0660fcea3 SHA-1: d4fab9a2ba7343178c87359c31fe83524145cfee SHA-256: 8ce7ef58e8f2c168b729d672889221417be48ea5cd43c68d5bfa9bb8a6c98e1a
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 0.9993

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://ponafet.ru/123?utm_term=dr+wayne+dyer+motivational+videos PDF link annotation
    • https://magazeja.weebly.com/uploads/1/3/5/9/135990405/6554183.pdfIn PDF document text
    • http://forsage.pw/gevamozojupevuhxcau.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452594/normal_5fec7bba9f11a.pdfIn PDF document text
    • http://pobesegu.scienceontheweb.net/administracion_de_medicamentos_via_oftalmica_procedimiento.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446161/normal_604011281d896.pdfIn PDF document text
    • http://ridovise.sportsontheweb.net/76113716090.pdfIn PDF document text
    • http://letxxnx.org/dallas_cowboys_roger_staubach_puntos194aa.pdfIn PDF document text
    • https://makigomeludawuk.weebly.com/uploads/1/3/4/7/134748455/jopefojo-sagojegom-wuzuvaziwameni.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/2956745982.pdfIn PDF document text
    • http://vumajufeboxidik.mywebcommunity.org/antes_de_empezar_saluda_a_todo_el_pblico._recuerda_1_of_1.pdfIn PDF document text
    • http://zisuroto.mygamesonline.org/what_is_samsung_tv_firmware_update.pdfIn PDF document text
    • https://jafobepajimo.weebly.com/uploads/1/3/4/8/134881918/0b7cb.pdfIn PDF document text
    • http://wide-do.top/mikro_muhasebe_program_indirmu74k.pdfIn PDF document text
    • http://vuroxinizona.scienceontheweb.net/delta_crib_target_instructions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_602afdec6e52c.pdfIn PDF document text
    • http://wujejejifi.mygamesonline.org/lexawetirenevoma.pdfIn PDF document text
    • http://kieverts.xyz/can_a_heart_attack_cause_paralysis9u3k7.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/giKWLxb/xonixesevoxunatenuvosav.pdfIn PDF document text
    • https://luwumevawosa.weebly.com/uploads/1/3/5/3/135322316/6e40e8735377.pdfIn PDF document text
    • https://cdn.sqhk.co/nemalerute/RcUJhcj/prank_call_wars_apk_mod.pdfIn PDF document text
    • http://dfds.in/biochemistry_for_dummies_kindle80g0m.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/what_is_the_importance_of_critical_thinking_reading_and_writing.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kusababi.onlinewebshop.net/puluxajud.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_off0000e516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE516 5224 bytes
SHA-256: 76708a886da77cddd92bafa620493785303155badc6ac799cae1ed25b45b3fd8
font_01_sfnt_off0000f6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E8 10808 bytes
SHA-256: 4e03c4a26480ac42ccf78aeb08f3322c0fcb45984370b072f3231ed6778070a5

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