Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe999eece2a65e5…

MALICIOUS

PDF

105.8 KB Created: 2021-09-23 07:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-24
MD5: b4623a29d2adaf22e805845dffe12c89 SHA-1: 63b5f602b75b405a3281eb4e3a9303e24e6af958 SHA-256: cbe999eece2a65e5c8050448aba3ee260ce6d16fc06334e4b340b4b2bb532a8e
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://crysiq.ru/uplcv?utm_term=fairy+tail+episode+1+dub PDF link annotation
    • http://hwayoung.kr/upfile/files/67182682263.pdfIn PDF document text
    • http://jagodkaprzedszkole.pl/userfiles/file/63090063476.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd5438dcec---61683539262.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/94004819602.pdfIn PDF document text
    • https://heks-tech.com/app/webroot/userfiles/files/febeku.pdfIn PDF document text
    • http://jiangsutravel.kr/userfiles/files/20210916_000904.pdfIn PDF document text
    • http://studiofapas.it/userfiles/files/zisujakewazixake.pdfIn PDF document text
    • http://eschool365.in/js/admin/uploadfiles/file/53156881985.pdfIn PDF document text
    • https://eguiders.com/uploads/sikabaleluf.pdfIn PDF document text
    • http://dissanna.com/temp/fckeditor/file/menob.pdfIn PDF document text
    • http://phutungtdc.com/upload/files/mavufib.pdfIn PDF document text
    • https://lnpro.in/ckfinder/userfiles/files/mifevezovetevape.pdfIn PDF document text
    • https://4cmedica.com/ficheiros_upload/file/bipawipozoxajarerozegaku.pdfIn PDF document text
    • http://3wsystems.com/shipinc/userfiles/files/weboz.pdfIn PDF document text
    • https://gujaratisamajparis.org/upload/files/denekuruvigifuwadi.pdfIn PDF document text
    • https://full-flavors.com/img/Data/file/maxogogabifeleduwegotobiv.pdfIn PDF document text
    • https://ist-lb1.istanajp.com/contents/files/98242590018.pdfIn PDF document text
    • https://ambulatorioveterinariosismondi.eu/file/kozelixepomivazerikir.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/a900b557ff814b0af2d8b590eb9b40fc/surupedilidorelan.pdfIn PDF document text
    • https://scavilecis.it/userfiles/file/40285466160.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16138e9d9a8e47---faretizalalu.pdfIn PDF document text
    • http://szigmetal.hu/editor_up/vipopilokewoko.pdfIn PDF document text
    • http://telegid.tv/userfiles/file/60440873114.pdfIn PDF document text
    • https://cicasoftavukatwebsitesi.demowebsiteleri.com/upload/files/33365171854.pdfIn PDF document text
    • http://megatex-plast.ru/pub/file/savinejugubujamorojugiv.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_off0001056c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001056c.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001056c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056C 26676 bytes
SHA-256: d4b12cfd0c500a6037f099b264a544ae3f16162e5dfb2caa479183c47b62ba07
font_01_sfnt_off0001490e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1490E 16376 bytes
SHA-256: 6b7158bde9bcd54c3342b08941ef0e41eff247434e84e35f61da297978e1aa7b
font_02_sfnt_off00015f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F95 10664 bytes
SHA-256: dfeebac65d80c2fb2e8762e02e62d67685784364a9ad692b3cd9722fcb5200bf
font_03_sfnt_off000177ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177EE 1808 bytes
SHA-256: ad2d3b604ae78b7efa31a60c02177b9eadc3554df94ade7820ee80c427c6810c
font_04_sfnt_off00018069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18069 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1