Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5fd51eeeb159d48…

MALICIOUS

PDF

65.9 KB Created: 2021-03-07 13:07:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e2b59a551e50977a602234442e0a1fee SHA-1: c687fdc276baf93f97b759d220742a2a76f94a3f SHA-256: f5fd51eeeb159d487299ad7025452e109226f1be0f0c98d9e6f3f461c8f72db1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/aws?utm_term=how+to+use+minn+kota+spot+lock PDF link annotation
    • https://cdn.sqhk.co/malevevipali/Jjfj11E/5690094460.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/jujaOE9/defence_force_application_form.pdfIn PDF document text
    • http://grandov.pro/ferizokizuvugovio8nag.pdfIn PDF document text
    • https://cdn.sqhk.co/voravaxa/ghzjglB/paintball_shooting_near_me_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/8i1amFh/datowuzafop.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/bxXE1ET/blockman_go_mod_apk_unlimited_cubes_2020_download.pdfIn PDF document text
    • https://befewegumezozem.weebly.com/uploads/1/3/1/4/131453636/5682977.pdfIn PDF document text
    • https://gakasubaji.weebly.com/uploads/1/3/4/3/134311876/ludobawokegi_kitifazasevewop_wowatimipisiwa_wovupon.pdfIn PDF document text
    • https://rugalasaludazi.weebly.com/uploads/1/3/4/6/134683923/925e94ad2.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/rDOGhch/ritijuva.pdfIn PDF document text
    • http://olipaka.xyz/what_are_the_qualities_of_pleasing_personality7n1vo.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/Chagddf/rigal.pdfIn PDF document text
    • http://health-top.ru/65566722002ls7xc.pdfIn PDF document text
    • https://cdn.sqhk.co/rorezina/jgginhc/klondike_adventures_unlimited_energy.pdfIn PDF document text
    • https://cdn.sqhk.co/tubafejog/tIjgihK/72056929685.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/wuzuwabivumirezo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6ba7316d-b84b-4ccb-a32a-103c856d4013.filesusr.com/ugd/91f37e_81b6d686b6174b9ba5c21a1c8efd67da.pdf?index=trueIn PDF document text
    • https://6739ca04-605d-4ff4-b4c9-4e5bd75a7819.filesusr.com/ugd/031dda_05d6c7bf770544c89019cc8eaec25777.pdf?index=trueIn 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_off0000c8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BE 5100 bytes
SHA-256: cc1813deead66d275bb2210749f1299a60b7731a1a3458468114d84cd154373c
font_01_sfnt_off0000da19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA19 9576 bytes
SHA-256: f7621ea01446343fafd20fc237915022b3662234225fd4bbea5406f0e9f370be

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