Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05d01d1db3cb056…

MALICIOUS

PDF

61.5 KB Created: 2021-02-12 02:20:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2ba01f471417b62edbd1f56864b4e14f SHA-1: ddbbd47fcdd3383a0985a46752c0257c0a4f67e8 SHA-256: f05d01d1db3cb0564281eef0dd2bb794f6efcafd706831d4dfe4d877e80e3d08
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/123?utm_term=american+experience+triangle+fire+worksheet PDF link annotation
    • https://cdn.sqhk.co/kavejufa/bjfUjuB/you_laugh_you_lose_challenge_bts.pdfIn PDF document text
    • http://lienforkid.com/how_to_make_a_composter_minecraftrz3am.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/zggd1ij/strategic_tactic_ww2.pdfIn PDF document text
    • https://bakijunida.weebly.com/uploads/1/3/2/6/132695635/daloloda.pdfIn PDF document text
    • https://cdn.sqhk.co/fatepotax/oieS5KJ/nowadazadurotum.pdfIn PDF document text
    • https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/dopem-dozekunozobo-morikekokewevi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451754/normal_600eb771725a9.pdfIn PDF document text
    • http://luchdobro.site/pinagajibawizewobiwakesjy3d8.pdfIn PDF document text
    • http://car-den.ru/cochlear_implant_mri_guidelinesl47zg.pdfIn PDF document text
    • https://cdn.sqhk.co/zozijawutuxu/gitZHSn/cascade_umc_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/ifjjibR/totosepijap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kagiweluxipo.epizy.com/causal_attribution_theory.pdfIn PDF document text
    • http://pigibotokaper.epizy.com/windows_boot_manager_android_x86.pdfIn PDF document text
    • http://bopamebedozupux.epizy.com/lulapozipuval.pdfIn PDF document text
    • http://jumerajoge.epizy.com/68740419796.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_off0000b666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB666 5640 bytes
SHA-256: 6f0011e10640b5f79e862ce036f9ff721e3555acd2369fdd5d86f62fe45a74ff
font_01_sfnt_off0000c991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC991 9228 bytes
SHA-256: b5858d62f61c8b6363fc3d7a21fcfeea7157872eea5f04bae9800680b7febcb3