Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f3f4ee06347107…

MALICIOUS

PDF

77.2 KB Created: 2021-09-17 15:36:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 212321c4256dd87ee2a7b2d688e9e1ff SHA-1: d9cd8928e6ab00ad3c058e84d37b7d88fc1a3723 SHA-256: 68f3f4ee063471075e7a024e56cee71e94c1ea526fc31542da91d52194cd7007
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on compromised WordPress installations, suggesting a link farm designed to distribute malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass security scanners. Although no scripts were directly extracted, the overall structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://pixomot.ru/uplcv?utm_term=create+a+zip+file+on+android PDF link annotation
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614429c664f96---nepefugolot.pdfIn PDF document text
    • https://krantiservice.com/ckfinder/userfiles/files/sexafosiju.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614460254254d---waxazadolifusonep.pdfIn PDF document text
    • http://www.florentmaussion.net/userfiles/File/kirabi.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161332c9d1caa8---51082633794.pdfIn PDF document text
    • https://indiantiffin4me.com/nbloom/fckuploads/file/60006739254.pdfIn PDF document text
    • https://www.douggoodkin.com/admin/ckfinder/userfiles/files/liwumewoxilosuv.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/b14b78921d5e0ea141f1e85804f1fead/13489759321.pdfIn PDF document text
    • https://ecodiagnost.com/ckfinder/userfiles/files/73635397194.pdfIn PDF document text
    • http://cyklo-sport-servis.cz/UserFiles/File/ronexaloziwona.pdfIn PDF document text
    • https://dobre-akce.cz/media/files/file/89414890565.pdfIn PDF document text
    • http://www.fashiongale.ro/userfiles/files/83911651236.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/161405d74a58a1---sudivobatoderi.pdfIn PDF document text
    • http://mobilenmr.com/files/files/10369133747.pdfIn PDF document text
    • https://szamitogep-szerviz-javitas.hu/ckfinder/userfiles/files/10877713629.pdfIn PDF document text
    • http://digitalpolicycouncil.org/imagenes/file/4912689312.pdfIn PDF document text
    • http://zuszdounky.cz/files/rufupugodeg.pdfIn PDF document text
    • http://phyllisrubensteinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/titetinawogifisesonop.pdfIn PDF document text
    • https://ventadeterrenosagricolas.com/userfiles/file/dewenij.pdfIn PDF document text
    • http://soskuwait.com/outscapes/admin/ckeditor/uploads/ck/files/ruzubuj.pdfIn PDF document text
    • http://metalzilemboeventi.com/userfiles/files/vadilelas.pdfIn PDF document text
    • http://spadhotel.com/basefile/spadhotelcom/files/78269332929.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_off0000cb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB01 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE313 17388 bytes
SHA-256: 9f67ff6efda2ef94f52c3feea0ecc3c0ba69e626c83c3ae8889d6108ed60bb80
font_02_sfnt_off00010f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F79 10412 bytes
SHA-256: efff4b841e37103c48be67f3d80ef9645a68fca418a88c1ed18d9cd26709719a

Open this report in the interactive analyzer, or submit your own file for analysis.