Malicious PDF — malware analysis report

Static analysis result for SHA-256 a604c78f2dabaa83…

MALICIOUS

PDF

72.7 KB Created: 2021-03-01 10:18:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 375740f9720f4c931d3c2a0937d2a737 SHA-1: 96ee0cc0c796fac72e1e9a85b2603ce3aa63200b SHA-256: a604c78f2dabaa83be6cc5f30683e52b5f686a91a9d9d8d5568f3e695dbf7d20
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://golowaki.ru/award?keyword=carbs+in+bob+evans+mashed+potatoes PDF link annotation
    • http://lighterusb24.site/vukotoseud1l.pdfIn PDF document text
    • http://idealicaufficiale.website/pitezivagewebaminaval0lm82.pdfIn PDF document text
    • https://cdn.sqhk.co/varaxupumami/eQdq8hd/xizojimixalerusupaze.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/UB9BJhg/6912522418.pdfIn PDF document text
    • https://cdn.sqhk.co/nosimasiv/iFH0BOx/status_saver_for_whatsapp_app_for_iphone.pdfIn PDF document text
    • http://axecheat7.xyz/troy_bilt_mower_bagger_partshvh2k.pdfIn PDF document text
    • http://1pokypki.website/jiladifivelofufavx3w1.pdfIn PDF document text
    • https://sojagifuwolu.weebly.com/uploads/1/3/4/6/134689160/ropulu-valekap-nijer-supisowokofuxuz.pdfIn PDF document text
    • http://ver-alex.website/hp_z440_bios_update2mzkc.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/mesure_de_masse_cm2_evaluationrqrqr.pdfIn PDF document text
    • https://pevunefimexog.weebly.com/uploads/1/3/1/0/131070247/3366641.pdfIn PDF document text
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/5120244.pdfIn PDF document text
    • http://tiktokhd.design/wedosuzefekesb49zo.pdfIn PDF document text
    • https://xaxomawiso.weebly.com/uploads/1/3/5/3/135329970/tuloxuzobufaxipaki.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/mega_filmes_hd_apk_atualizado_2018kt59x.pdfIn PDF document text
    • https://nekitunanozot.weebly.com/uploads/1/3/5/3/135346928/a3a987.pdfIn PDF document text
    • http://zoompol.xyz/lg_oled55e6p_manualj0ejp.pdfIn PDF document text
    • https://zelekunidos.weebly.com/uploads/1/3/2/6/132682808/vinerivur.pdfIn PDF document text
    • https://xiresipi.weebly.com/uploads/1/3/1/1/131164504/3661373.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tenunud/xebajub.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/fusexajubevogolu.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/graphing_coordinates_pictures_free_worksheets.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_off0000df40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF40 5272 bytes
SHA-256: 6c54623401a75193653bdfa096eae6d549f848fe5d6c3ef01210786ccbeb603b
font_01_sfnt_off0000f0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FC 10684 bytes
SHA-256: a1e5bb81102d250c07163e7ece6250f1201fa15b60ccbfb8b3551e1377dbd918

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