Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb84edd8b1f82e8e…

MALICIOUS

PDF

83.7 KB Created: 2021-09-12 02:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: 5e42f3881926fd883d28c4474cb880a9 SHA-1: 138655b5e410d336deabf3a26c55205bacf57ead SHA-256: cb84edd8b1f82e8e067a8fd4f23b8a2c7bdd8b6f3654beb658a1e1d5542e1705
271 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://chcial.ru/uplcv?utm_term=move+messages+from+android+to+iphone+after+setup PDF link annotation
    • http://chanhungcorp.com/images/uploads/files/67476112815.pdfIn PDF document text
    • https://www.southdownscellars.co.uk/ckfinder/userfiles/files/55478383907.pdfIn PDF document text
    • http://tythb.com/uploadfile/files/91235478623.pdfIn PDF document text
    • https://wittnebel.dk/file/kigekibanexiporusow.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/90334731985.pdfIn PDF document text
    • https://medsplus.us/admin/images/file/lusurupukijoxagozir.pdfIn PDF document text
    • http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/45579862753.pdfIn PDF document text
    • https://holycrosshealthcare.com/userfiles/files/90995719937.pdfIn PDF document text
    • http://moscowballet.ru/userfiles/file/13613328495.pdfIn PDF document text
    • https://mehreganimaging.com/images/upload/files/dubufeno.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/suboxanikevesabu.pdfPDF link annotation
    • http://parentini.it/userfiles/files/46679084430.pdfIn PDF document text
    • https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/siluzaz.pdfIn PDF document text
    • http://gaushalango.com/uploaded_files/userfiles/files/70453832877.pdfIn PDF document text
    • https://praktijkbinnenstad.nl/file/mizudijetojubuwivi.pdfIn PDF document text
    • https://hotlinepro.in/admin/userfiles/file/pulowuloj.pdfIn PDF document text
    • https://novamakine.com/upload/ckfinder/files/13502405357.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/58546368586.pdfIn PDF document text
    • http://aedjtjdshbf.pretty-match.com/upload/files/87937536600.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/vumilotewaxavafugorej.pdfIn PDF document text
    • http://jezirka-biobazeny.cz/UserFiles/File/44461738308.pdfIn PDF document text
    • https://digireg.ru/upload/86742901887.pdfIn PDF document text
    • http://studioingegneriavaragnolo.com/userfiles/files/xatevemosuduvudeterulezer.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/vujakutewo.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_off0000e0df.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e0df.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DF 17952 bytes
SHA-256: cdb124e342484008e46b7a2d4bbd352b399b1f3c781a67983ac8706185c43e27
font_01_sfnt_off00010f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F63 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001277a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1277A 11056 bytes
SHA-256: db007c720632d99fdb35e41037b6ff45065ccdd4a50cfaff3a0d94ae662faae2