Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc94658a1973a28…

MALICIOUS

PDF

87.7 KB Created: 2021-03-16 01:24:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 94d96161b3fa1a4a1dddf8f3720f8ad3 SHA-1: 30f7bfb3af2031ddb141513b3be5def92c99a931 SHA-256: ccc94658a1973a28175f8d98654dc134007cbd5a71ef12a8074ef95a5cfe3181
126 Risk Score

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 0.9994

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://midufefew.ru/wix?keyword=dynamath+april+2019+answers PDF link annotation
    • https://pedegafulip.weebly.com/uploads/1/3/0/9/130969407/nadodogakusaf_tujaxozafa.pdfIn PDF document text
    • http://aazzzry.space/85316852727fugz8.pdfIn PDF document text
    • http://dexowowijovovu.iblogger.org/zuvilejupojimaw.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/what_is_the_density_of_liquid_water_in_g_mlic4o0.pdfIn PDF document text
    • http://7gusevshop.space/hangout_free_for_windows_8._1bxqm4.pdfIn PDF document text
    • http://pr-bux.online/agneepath_1990_full_movie_free_download_3gpvggsm.pdfIn PDF document text
    • http://moymagazin.xyz/how_to_fix_suburban_rv_furnace6tg5m.pdfIn PDF document text
    • https://gatakuluva.weebly.com/uploads/1/3/1/8/131856326/sijivutoz.pdfIn PDF document text
    • http://goproonly.com/how_to_power_corsair_commander_pro5z6xr.pdfIn PDF document text
    • http://jekiroxawuto.iblogger.org/gojitigumefogexuxugukodeg.pdfIn PDF document text
    • http://xowanopumug.22web.org/sotalalolis.pdfIn PDF document text
    • http://vezujabajiwive.22web.org/nouer_sa_cravate.pdfIn PDF document text
    • http://helpverifybadges.com/book_summary_example_third_gradevpi1q.pdfIn PDF document text
    • http://idclick.cash/91714734689l0i9b.pdfIn PDF document text
    • http://wonder-ita.fun/rujilomovomovfbwmo.pdfIn PDF document text
    • http://italy-small.space/71374363514110ha.pdfIn PDF document text
    • http://tk-time.site/truck_simulator_europe_2_download_uptodown5b78z.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://wiwifiladovov.epizy.com/luvosivikutaparuwi.pdfIn PDF document text
    • http://xugadizedema.rf.gd/15813826619.pdfIn PDF document text
    • http://nigiragesowujow.epizy.com/smartest_guy_in_the_room_full_movie.pdfIn PDF document text
    • http://govegid.rf.gd/miravefalogoremixowezusen.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CC 5412 bytes
SHA-256: 8ecdcd127bfbcb37e3ffc3d99cf1b31305100bea70a754a4ffd6fe2b53a14524
font_01_sfnt_off00010b10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B10 11760 bytes
SHA-256: 4012b6b0365005c898556275267466e0870918f5a5b8c6946ce6636783376c68
font_02_sfnt_off000132ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132EE 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
font_03_sfnt_off000140ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140ED 4304 bytes
SHA-256: ab858276e954964ca09255fc9a1c707e233f8696bbf7232dcda4d5d4140778e8