Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce8954c4d5f79ac…

MALICIOUS

PDF

71.9 KB Created: 2021-03-09 15:52:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1236f1ed572c9780d154617ad0c89d9c SHA-1: 92710be8aad37955e2003804e12502c548210a39 SHA-256: 7ce8954c4d5f79acc674ec14478c7c3414f558a11526b2ae499f707bb047cd15
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 0.9996

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://vilenefex.ru/award?keyword=anatomie+interne+du+coeur+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495265/normal_5fee082f96b32.pdfIn PDF document text
    • https://vimavaduziwali.weebly.com/uploads/1/3/1/8/131856569/0ec4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403121/normal_5fd1d5521eb66.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/25823766277.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/ancient_egypt_hieroglyphics.pdfIn PDF document text
    • https://torurukiruxo.weebly.com/uploads/1/3/4/5/134529807/d3325dcfde.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/list_of_american_army_ranks_in_order.pdfIn PDF document text
    • http://tijudiwulewanuw.getenjoyment.net/when_should_you_yield_the_right_of_way.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450733/normal_602d3034a7ef6.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/woxotopapozokev/gardeners_lodge_broadsheet.pdfIn PDF document text
    • http://mebexadesojixip.rf.gd/always_on_display_not_showing_android_9.pdfIn PDF document text
    • http://balesalefune.epizy.com/thanatophobia_rogue_legacy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ed7e76f-9b53-4d8e-9861-60507cf37ae3/45485009509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d65e617-f70f-406d-a7cf-67e52e5d5d32/vomuduvopubapemiweler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c510e4f0-6743-4c2f-85b8-f108105f2d02/lidunukofil.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/tibapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24a92ba-ab98-4a3a-9e1e-96eb2cb162da/clarion_car_audio_bluetooth_suzuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a990c03f-73d3-456d-9cfa-7fe460019671/naval_letter_format_example.pdfIn PDF document text
    • http://fetufebutegiv.rf.gd/philips_smart_tv_software_update.pdfIn PDF document text
    • http://fumesowira.epizy.com/electricity_and_magnetism_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/bissell_little_green_machine_clean_nozzle.pdfIn PDF document text
    • http://tixofimisupabev.onlinewebshop.net/bupab.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB79 5080 bytes
SHA-256: 15c016c7c41e90191310d38c3e3ad57263a6272ad22c2a8fbc0f31763ed27788
font_01_sfnt_off0000ecae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAE 11220 bytes
SHA-256: 6747bf071eb9f7e2f17ea5b1a1600cae60a07582b8de5af4ced16dfb506bfa8e

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