Malicious PDF — malware analysis report

Static analysis result for SHA-256 704fe6b18f9da597…

MALICIOUS

PDF

89.4 KB Created: 2021-07-01 09:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b36623a4f61f0ec56d776137a71a33fb SHA-1: f34b23f94d0847e4fa67324be0423476d29d412b SHA-256: 704fe6b18f9da5978485a4967dbb46986bb2c5bd6950ddb26fb42eff4171ea83
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs pointing to compromised websites, indicating a link farm designed to redirect users. Heuristics suggest these links are used for phishing or distributing further malware. The ML classifier and ClamAV detection strongly support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://allytemp.ru/uplcv?utm_term=forms+of+behaviour PDF link annotation
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/24tdtpll2l8uuep59dt500rp2b/31957183778.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/beef8feb9b8b378b72598215f59ba5fd/bupudadimakaz.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/ao2sf31fa2i36laj5gfd9s1dio/3628596088.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfc9abc4d0d---nesavurilikazatow.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be53c0c7d79---gefuke.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607182da80339---20410538690.pdfIn PDF document text
    • https://bladmedyczny24.pl/wp-content/plugins/super-forms/uploads/php/files/e29462f5b8661258d7ab3bc8ea14791f/76375165634.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87567d80de---16724318071.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/8f0ad701e11998bf843d205cd3d1ab61/xijenorukanizesexeduvuka.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/17848366170.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/6f71120d9bf0659091d20f0d88603deb/39729059132.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/4aghl88od1qq7uq6t2e851i1h5/jiraburakesuvikuna.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/bbd11514bd33a408d9a06215a02b8190/90711323858.pdfIn PDF document text
    • http://shriadinathbank.com/uploads/70264433099.pdfIn PDF document text
    • http://dungcubepgiangtrinh.com/webroot/img/files/moravufumodifakarewizunof.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/c30e678d82c6b4f2b7152870d4892c74/fonugopeti.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dfb5be2e1d---3958320513.pdfIn PDF document text
    • https://congchung7.com/upload/file/78190272617.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/i4a6tpsrv72vq6qddj6u83f65j/nofoximifijukokapaz.pdfIn PDF document text
    • http://korean-school.hu/hangul/userfiles/file/vesuworozaxixixixali.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/70224427919.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8ccd74131---59064897074.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/gl3cm9i16ef6s1j5lq21gb46l1/meraxemovexav.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/be64634bda19578a2015b81444c0e96c/tomuxe.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/d4f5461f304c565d75d81ea32ce13cfb/dalitusewemawakiz.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_off0000fd34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD34 16640 bytes
SHA-256: 6f238e4d5513a64d620349252829133b38d81ef6f275de5efe0462b3f88b27fc
font_01_sfnt_off00012893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12893 10512 bytes
SHA-256: d59a712cbb83aded3534464fb5a2926babdaee936d7c44d8089443e0f9d03f0f
font_02_sfnt_off00014083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14083 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1