Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee818bc74ac0e958…

MALICIOUS

PDF

74.7 KB Created: 2021-03-27 20:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fb6529f2e9ea688a9a2114910a112232 SHA-1: 949060bbdd067acc32e49439369301a3a11fe406 SHA-256: ee818bc74ac0e958873843b94006b4cd2e5424ace8c933f901eda242d8d45c9b
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 0.9991

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://jumiwimov.ru/123?utm_term=chupke+chupke+chori+chori+movie+song PDF link annotation
    • https://cdn.sqhk.co/wujakegu/jihithc/99550563233.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/dquF6if/alabama_road_trip_map_of_scotland.pdfIn PDF document text
    • https://giwitororozesal.weebly.com/uploads/1/3/4/6/134652081/tuwoserakibope.pdfIn PDF document text
    • http://sazaleve.22web.org/brainstorming_worksheets_for_creative_writing.pdfIn PDF document text
    • https://mijezuri.weebly.com/uploads/1/3/0/9/130969422/825c8.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/hjfggtC/94663362098.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/gjjjcii/talisman_origins_beyond_the_veil_gameplay.pdfIn PDF document text
    • https://libakitaxejadeg.weebly.com/uploads/1/3/4/0/134096258/givavuz-serarugidavi.pdfIn PDF document text
    • https://cdn.sqhk.co/bokirebi/ghggjaG/best_snapseed_filters_for_food.pdfIn PDF document text
    • https://moviwinexanasi.weebly.com/uploads/1/3/4/3/134314602/3579143.pdfIn PDF document text
    • http://nojavit.22web.org/sovageto.pdfIn PDF document text
    • https://panirosarukiza.weebly.com/uploads/1/3/4/1/134132539/badepowovo-damoduxoxabura-tezojesisi-xedipifavoxepuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xadaguxo.rf.gd/logical_and_analytical_reasoning_book.pdfIn PDF document text
    • http://boreduse.rf.gd/kofaduvawiji.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/kakariko_village_twilight_princess_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41f9a9ec-3593-4b02-8fad-9409326b8755/which_samsung_models_have_bluetooth.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/93629106582.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/scottish_league_2_form_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4421650-445b-4514-96f8-54d0dc2f14e7/toro_lx420_transmission_belt_replacement.pdfIn PDF document text
    • http://nugosipokudi.epizy.com/1372649102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e87e23e-fcd0-4396-b968-4305b4a25039/read_after_we_collided_online_free.pdfIn PDF document text
    • http://sixijoras.epizy.com/mobile_legends_guide_beginner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84585541-535b-41e1-b450-0f3712deb820/83523435740.pdfIn PDF document text
    • http://tiluremuxaz.epizy.com/brother_hl_2040_printer_driver_download.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_off0000e679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE679 5136 bytes
SHA-256: 586a8c1f141d5e31fb521135165f4b69babc4003fcd7f77d86f073cc797901b5
font_01_sfnt_off0000f7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D2 11048 bytes
SHA-256: 7e1c6806430ce3331499ea7731b5038e90d21193604c6d8d9703a1c5d0c2a489

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