Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df368d628ae175e…

MALICIOUS

PDF

80.8 KB Created: 2021-06-30 13:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 739aff573289478392b5ca63033bd041 SHA-1: bef9f1e9aee24b0c09dad2d67242924d9b738d7d SHA-256: 7df368d628ae175e3be0f34b5639d2d7640352c856726c1e24aac7d29d68bad4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV, indicating it is likely a phishing or malware distribution lure. The file functions as a link farm, containing numerous URLs pointing to potentially compromised websites, which are likely intended to redirect users to malicious content. Although no scripts were explicitly extracted, the PDF structure and link farm nature suggest an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://sjalikave.hu/pictures/file/82921102918.pdf In PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/16095cabb1f3a4---dilabeluwun.pdfIn PDF document text
    • http://hzkontejnery.cz/ckfinder/userfiles/files/81065885106.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2a2abd4af---22273272807.pdfIn PDF document text
    • http://www.ipkameralari24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d779d28c386---67311419461.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608604ba3eb47---16462877023.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a20b6f33ec5---numuvuwamazozodadovil.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160744a87ab841---wefaxaxifefidepamadot.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160b02ecb7c120---92485341839.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c19daeb9544---soxulizukurapogogalasalid.pdfIn PDF document text
    • http://hpmcfamilyreunion1968.com/clients/83891/File/54285169021.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/aa3501a5294ffea4f64e6f9d9ceaf5ea/nifedewevazanunabusu.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/49601313903.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210624004546375.pdfIn PDF document text
    • http://nutronicltd.com/userfiles/file/46315811664.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd6c7e32d9---69413724261.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e7bdd8c26---90615685924.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/00q0a1l2rmrpilv0n227g3c59e/fisavasufido.pdfIn PDF document text
    • http://www.majbrno.cz/uploads/files/70596407945.pdfIn PDF document text
    • https://thietbivesinhanhhuy.com/asset/files/viwakexomulaf.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/nobajojuto.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/dlelovu579ke1jvlq5gqgj8gi8/kexovepikivuwuwasekeb.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/94cca7729e6fa458cb3d6ef88c3a6b54/7547027347.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/a9j44k2vsifq4heuju5l2edf65/disoditanaze.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b80d65c655b---bixevel.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160cf5e3c2a9de---20772816057.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160717e422ff4d---lelogavezipoji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=algebra+2+chapter+8+quiz+1+answersPDF 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_off0000d79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB1 16668 bytes
SHA-256: 05580cfc37d84556c5369413afcadf5e18d2533440fcde39f438aefe35dda928
font_02_sfnt_off00011b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B3E 11424 bytes
SHA-256: 9297b46122381f7e3797fe15b1499d25b80709fb4c6e799c2bf527c6c1602070

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