Malicious PDF — malware analysis report

Static analysis result for SHA-256 79eee77f835e5612…

MALICIOUS

PDF

84.9 KB Created: 2021-07-08 08:35:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 58092ec2218e60672beedc258064334e SHA-1: d4b538ac256f57d1f356c38f24362236d0858bbd SHA-256: 79eee77f835e56124f0199a090aee8f74d719ef705cac0b0346489a8ec27bfc3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier. It contains a large number of embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The primary purpose appears to be to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/cgr6pl1l1mvj9r3ln569nr4rgp/tizijujenofusenotufuju.pdf In PDF document text
    • https://myphambambi.com/webroot/img/files/69836837573.pdfIn PDF document text
    • https://gea99.com/ckfinder/userfiles/files/zubixabob.pdfIn PDF document text
    • http://vandientuchinhhang.com/upload/files/kodusidagemorujiremazu.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/devub.pdfIn PDF document text
    • https://sieuthimayphat.com/ckfinder/userfiles/files/pepozipegasufib.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608334d1a27ba---fowofinukapiluve.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/wedazugu.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/kifuwibujufebuxixegojiju.pdfIn PDF document text
    • http://k1a.ru/images/files/file/61316110879.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e7253b208---60793624629.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607449c29951a---xotarisorobunuloz.pdfIn PDF document text
    • https://sjalikave.hu/pictures/file/86195782180.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/binoziruxer.pdfIn PDF document text
    • https://t2sc.me/userfiles/xatuwij.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/1423231399.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/95d5f823459242981aa54e593627d64b/1455926980.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdf791145a---feborajapow.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/kudajifit.pdfIn PDF document text
    • http://colegiosantarosa.com/uploads/imagem/file/13627995459.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606c98e131765---83032289048.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160ce21e8dbd44---lubovix.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/a2e897ab5d8d5f8ecf6e155417179f34/6826909053.pdfIn PDF document text
    • http://nkland.org/userfiles/files/momifurifuzubajazixefuk.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/ha4qrtemkk9sa4e1vto3gsjqu0/lekojatikinitixesugewawe.pdfIn PDF document text
    • https://arrayamed.com/userfiles/file/32584015782.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3cb6a72cd---marom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=mccauley+propeller+application+guidePDF link annotation
    • 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_off0000e94f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94F 10728 bytes
SHA-256: 065d5fb331d7b422915fa366480c9e616952c594c4d8a9566dbbe0262f9dc269
font_01_sfnt_off000101e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E4 17324 bytes
SHA-256: 3287015692bff396020802e42068b8e71b32982bd8b982c7db493d524703fe84
font_02_sfnt_off00012ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1