Malicious PDF — malware analysis report

Static analysis result for SHA-256 0729154f6ac0711e…

MALICIOUS

PDF

95.3 KB Created: 2021-06-30 23:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d1f960a46d674de66b96454b17fee358 SHA-1: 8f19e2540ce6fed50041c020bcb33d88e75c5a09 SHA-256: 0729154f6ac0711e021598447f0fb912a24899a74956019a3d000733b5b2d10e
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external websites, some of which are hosted on compromised CMS platforms or disposable hosting. The presence of numerous links and the nature of the hosting suggest an attempt to distribute further malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/fc905f9197428fefc9ab9d2338d85256/medajiwap.pdf In PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849b0472a9e---wiwibulebuwukizebu.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/xibomitegu.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16089f967ab6b2---67886616024.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/87913a491332c68318d9a0640664599b/52470174365.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c1fbb9310f1---59346632695.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f43e2b98c0---72374418155.pdfIn PDF document text
    • http://smflow.in/admin/uploads/file/xasove.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606da63e800ce---xizukatesewamu.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607787e16e7ce---60488829321.pdfIn PDF document text
    • https://haidangpc.com/contents/files/rorikusujuve.pdfIn PDF document text
    • http://rudolphalexander.com/uploads/files/9989770636.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/r98kq70umagmhnnravj6c6bph1/43002058184.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160928ac411761---60796446928.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f941d99d53---jupepiwefolodurewesugo.pdfIn PDF document text
    • http://vinmexindia.com/uploads/gojit.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/16093a6d7d0788---90434835615.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/8769837843.pdfIn PDF document text
    • https://miaousland.fr/ckfinder/userfiles/files/77404307463.pdfIn PDF document text
    • http://alumcity.ru/userfiles/file/27894374357.pdfIn PDF document text
    • https://calendarsunrooms.com/userfiles/files/sonemotonusadonalupa.pdfIn PDF document text
    • https://pirkitpadangas.lt/ckfinder/userfiles/files/bijorowamaperu.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a50a4f04720---38609766330.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/8c783df7d3d77b1ad1b0fc3d12fc7d5b/gutibuviwisulilu.pdfIn PDF document text
    • http://hilltopperalumni.com/clients/9/93/936f23dc4abb03f6d4a1aae2c8a32781/File/18685545273.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=watch+web+shows+online+freePDF 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_off0001123d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123D 16804 bytes
SHA-256: 48de1fd4688485dc85b190314d531b926c7fa172e7068b274149d9459bc4b46d
font_01_sfnt_off00013e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E07 10652 bytes
SHA-256: 6e57fb623ea4a96fb8b4fa5a3653fad4b7c76fb8e8aebb70ed168a3c84cd147d
font_02_sfnt_off0001566a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1566A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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