Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bce094eecdf567c…

MALICIOUS

PDF

73.9 KB Created: 2021-06-09 02:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: fb92b687c54999ff3e244ed0025c7fa8 SHA-1: 333ce8387f483bd9d5efa4d1845870c2965c3fa7 SHA-256: 5bce094eecdf567c12e6bc51f41f0e48cc7c53bcf04fbb48148420c751a6384f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or content-luring scheme. The primary URL, 'https://infrive.ru/pbw?utm_term=mohenjo+daro+telugu+dubbed+full+movie+download', is likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://infrive.ru/pbw?utm_term=mohenjo+daro+telugu+dubbed+full+movie+download PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4490125/normal_60b75de41b472.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4414169/normal_60b1b1c4311f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373769/normal_6036a1a15dfa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401505/normal_60303eea2ec46.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4489035/normal_60b321ee3fc9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_605f399f83c79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382780/normal_605521403efef.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/6ff8793e-1b81-40af-979c-5816de143a80/the_monkeys_paw_foreshadowing_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b982538-7173-4075-96a4-bccc56609934/43640155726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab0234d3-b182-4857-917e-de958eb0f2f1/adjectives_worksheets_for_class_4th.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cb0088c-b358-4652-a837-bc34e36ecb3e/arduino_nano_every_vs_nano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39587139-e4ec-48a4-b784-8ab4c8d57172/nujobofovolapilov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb8b33ef-0b55-480e-9889-63fac0d08984/download_raft_survival_simulator_mod_apk_android_1.pdfIn PDF document text
    • http://mujefapufefi.pbworks.com/f/48316414872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/928c158a-2b34-426a-80cf-0db665c17c58/coleman_retro_rechargeable_lantern_replacement_battery.pdfIn PDF document text
    • http://najapenoz.pbworks.com/f/hack_tool_apk_without_root.pdfIn PDF document text
    • http://pijipusap.pbworks.com/w/file/fetch/144816417/crimson_tide_full_movie_watch_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92dbc970-39e6-445f-911c-9b3ce2250563/41395113505.pdfIn PDF document text
    • http://dejimebez.pbworks.com/w/file/fetch/144427365/is_space_hulk_deathwing_worth_it.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e374d4c0-efd9-4dd2-8d32-4e2061bed0a7/zorowigarateta.pdfIn PDF document text
    • http://buvavipoluvu.pbworks.com/w/file/fetch/144562656/bala_tripura_sundari_moola_mantra_in_kannada.pdfIn PDF document text
    • http://xivoxibuza.pbworks.com/w/file/fetch/144787506/workpro_quantum_9000_parts.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_off0000e253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE253 5516 bytes
SHA-256: 5af2d7b178b79c5c7de7fec0e8f8d1ac9affe661628d6caf8851f68a86103c1f
font_01_sfnt_off0000f50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50C 10752 bytes
SHA-256: ddba9fc0a1d0bf0cc08145c964f26be0e63ffcab7f23f5433e1da46865f8c0a1