Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e9cb99ef2ab4d7a…

MALICIOUS

PDF

78.7 KB Created: 2021-07-02 05:31:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 64db605210eed04a095fd897dfc2fa9d SHA-1: d380412340c1157e6aac8856a2bcc1511d2ff3a6 SHA-256: 7e9cb99ef2ab4d7ac0c5fc851e42bbcc9777555071ca8b80030f425977e1e10d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that exhibits characteristics of a link farm, with numerous URLs pointing to compromised websites and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were directly extracted, the PDF structure and embedded URLs suggest it is designed to lure users to external malicious resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 6

  • 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 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=words+that+start+with+st PDF link annotation
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/25d71739b8fd6d324200b943c5e34be3/dukakumusifeto.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/mezonetapiz.pdfIn PDF document text
    • http://ks4073.com/file_media/file_image/file/98562136176.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0d66cd1b6---pevibilasaza.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/4338a57ccab9791811bc0f4caa254bd5/5369656470.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/ecfb59c4ff23020da7f30b661cd15ba7/62780165550.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3f8f7eea6---silukifufijip.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a494cddc803---vibasesajotutuvizuw.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160825c7db7ef6---52742798228.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bfbd4e060b3---jimupifosegidafonaz.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/cb18318fe60dba6193823e1ce263eeeb/99160644529.pdfIn PDF document text
    • https://fiscalonline.ro/app/webroot/files/userfiles/files/mipapevetoditipogenatewe.pdfIn PDF document text
    • https://valserve.in/web/k/main_admin/ckfinder/userfiles/files/27687101474.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0bc7084c9b---sogedobaminibuzewofoz.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/30e2cf10fa694cc62b42b40ee525eebb/mesupolokagi.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/demixofuzibopozapos.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbc6271617---13525090643.pdfIn PDF document text
    • https://ctners.com/ckfinder/userfiles/files/45164812979.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16071209d17c42---vefewero.pdfIn PDF document text
    • http://kup-vino.cz/web/ckfinder/userfiles/files/93139383786.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/2mp9aeu3qruq32u3vdpt6r8ob0/84667102721.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/00357d9933f7d807c3e897ceadcd225c/razifebusoxesuravegukebi.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608845862d91c---dubutuxanebatigavole.pdfIn PDF document text
    • https://raptiherbal.com/ckfinder/userfiles/files/39093901827.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1606efbb7026b2---zabis.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d9148725d86---8347889003.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD281 17068 bytes
SHA-256: 79c64dc275d771bd19e99f8e82d1dc21540c2ebb7b754fe4f4f8dec638a43286
font_01_sfnt_off0000fe75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001168c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1168C 10144 bytes
SHA-256: fe98f853f069f40a7a073d461c320341cef7f61346070ad74d83460daa284b15

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