Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ca541501856785…

MALICIOUS

PDF

97.0 KB Created: 2021-09-15 17:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: 5842b0c40a19028f2d632a1e36c9a276 SHA-1: 3b0ceb05d6ca8ea7058d7b57618f1b07c59ce9b1 SHA-256: c0ca541501856785b5a39191b81ccdb2c8f58539394c68dfb9c7980a30fcae04
321 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 10

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 http://greatwalledmond.com/ckfinder/userfiles/files/neziginufutuduratipe.pdf In PDF document text
    • https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/lojarudufa.pdfIn PDF document text
    • http://wksx.top/images/userfiles/file/83734688098.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/kabezav.pdfIn PDF document text
    • http://artepcb.com/upload/files/88791835269.pdfIn PDF document text
    • http://alianzablue.com/aym_image/files/19012529371.pdfIn PDF document text
    • https://path.mn/userfiles/files/vukawofub.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/vuwafemuporebaxarisemusa.pdfIn PDF document text
    • https://nedimgame.net/calisma2/files/uploads/62114957059.pdfIn PDF document text
    • http://goldenpeak.it/userfiles/files/35137492518.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/52b9fb10f80e75f2b6cd2d69c3d6efc6/319815338.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613368e2764a9---nejexusigiwevo.pdfIn PDF document text
    • http://manvilastrust-org.bvirani.com/ckfinder/userfiles/files/80058755947.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e8365aa5db---89252842997.pdfIn PDF document text
    • http://schuetzenfest-hemeringen.de/ablage/userfiles/files/73749168277.pdfIn PDF document text
    • http://aromamahabaleshwar.com/ckfinder/userfiles/files/pujugamakez.pdfIn PDF document text
    • http://escalierdurire.fr/ckfinder/userfiles/files/faxel.pdfIn PDF document text
    • https://papersacksfactory.ae/images/bulk_images/files/xutelofazonifuditisew.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/o7qmkdvosctehq18t5a1h1321m/73087136469.pdfIn PDF document text
    • http://2222.netsociality.com/upload/files/tilolivixezeru.pdfIn PDF document text
    • http://starinviter.com/ckimagefiles/jatetubuz.pdfIn PDF document text
    • http://altus.pl/userfiles/file/99916931268.pdfIn PDF document text
    • http://zhongguohuachun.com/d/files/45676684949.pdfIn PDF document text
    • https://pixomot.ru/uplcv?utm_term=disk+usage+androidPDF link annotation
    • http://asbazainville.org/userfiles/file/bebineziso.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000113ac.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000113ac.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000113ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BBE 19264 bytes
SHA-256: a7fa3517b5fb7a616214b2e3b2edf282a111cd968a62a058e14a667880a3bb28
font_02_sfnt_off00015ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EC4 10472 bytes
SHA-256: ba1d52405f69cf7f861db8b3d6e817cf85f83fc4e729e556dc0fefb00ad13786