Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c3b1ca17c344cb…

MALICIOUS

PDF

73.1 KB Created: 2021-02-25 02:56:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d468faeac800f9e2e6d15c3ddffbcc25 SHA-1: 4317e57713b447bc5ab29b9fac60d02afef4a51f SHA-256: 19c3b1ca17c344cbf3e9d78b92ea3541271cb949a5f1cf310af56845889c2932
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://seumenha.ru/wix?keyword=7+days+to+die+not+loading+on+mac PDF link annotation
    • http://mitutepoka.medianewsonline.com/bajebatizalonebok.pdfIn PDF document text
    • http://ourfutures.space/types_of_distillatione660a.pdfIn PDF document text
    • http://1xbet-football.fun/futukuwulowiwekanj6mvt.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/idYjcgh/poker_mixed_games_strategy.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/can_i_add_essential_oils_to_my_vicks_cool_mist_humidifier.pdfIn PDF document text
    • https://kazofinuso.weebly.com/uploads/1/3/4/3/134369681/c9fc6fd7df04.pdfIn PDF document text
    • https://kipunazumalimak.weebly.com/uploads/1/3/4/7/134755782/8536344.pdfIn PDF document text
    • http://bettermoneytips.com/43274042204l9f6j.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwifoviwalo/hhiadje/wipal.pdfIn PDF document text
    • http://peuly.xyz/how_do_i_transfer_music_to_my_eclipse_mp3_playerqar89.pdfIn PDF document text
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/famimifegapopu-fimelizugulamoj.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/vazisi/wiluvup.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/bleacher_report_spurs_ajax.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/nosukirukapijokesatan.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_off0000e191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE191 5252 bytes
SHA-256: 9cc52956f6791f3a94a4d15574bb758af1cf45789a3573fc04a0df2dc93572b5
font_01_sfnt_off0000f36d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36D 10596 bytes
SHA-256: 0152dab928758e4957759ce385d596f29accb224ed1a8dfccb8dd2884f8ca50a