Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13ffdc7e30a48d3…

MALICIOUS

PDF

74.2 KB Created: 2021-03-06 13:34:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a53aae992087c56eb4ff64250a8ac774 SHA-1: 940ed4c4188ab08c88146a736fbb5bb45ecf10a5 SHA-256: a13ffdc7e30a48d39b828a850f8fc16c8322d17261949b8c92936585baae5538
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gimoguvi.ru/award?keyword=dark+souls+series+bosses+ranked+by+difficulty PDF link annotation
    • https://cdn.sqhk.co/depivuni/gdMidie/penar.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/43118033159.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/keurig_2.0_k250_filter_location.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449183/normal_5ffeb60a25dd0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fcabd30a6250.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/jegdYjd/cosmos_flower_color_meanings.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/hg8thc1/mimpi_ular_kobra_togel.pdfIn PDF document text
    • http://interbank.link/98959741668gruro.pdfIn PDF document text
    • https://cdn.sqhk.co/digiwejasipu/jjetjda/among_us_mod_menu_apk_download_an1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411218/normal_6017fb49246ec.pdfIn PDF document text
    • http://copyrightnotice-ig.com/kaththi_villain_background_music_freeuefln.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448540/normal_60091534020a2.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/jggjiAQ/19243282424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_602444b183651.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d1965ea-fe30-492d-b377-1f4394a0a89e/47013035458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f97458b7-6314-490c-bb4a-8968a1b40d67/yes_please_coffee.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/total_gym_xls_workouts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4af8819b-d125-49d1-b255-a26683d25788/fazodupazolibarefutesir.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_off0000e762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE762 5320 bytes
SHA-256: 3e2ab3223bae9c704e93d6cd604ee404868dff8670c3415fd51966c1efbdf052
font_01_sfnt_off0000f999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF999 9936 bytes
SHA-256: 1c0daa211e19321e76a3a5c3fe583533a4ad5eaacca5bb2ff50ffdbf51b858d8