Malicious PDF — malware analysis report

Static analysis result for SHA-256 35fceebe1e8fc4d7…

MALICIOUS

PDF

110.8 KB Created: 2021-06-29 12:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f11ed1e75fb699f14784f45d21197451 SHA-1: 4aa48d3cecaad9a49a261bd33ad8aa72923fe127 SHA-256: 35fceebe1e8fc4d7259ccdd98419e56fc06620f3c0f488d4e6bac12e3cef3f4e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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 http://glenbrooksouth1970.com/clients/1/17/17fc1bd13d5538a69f39d58c869d2fc5/File/60448824349.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be4fb67e9ab---visizuwibij.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///71344892864.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070336470cce---konibuwosovofexewajis.pdfIn PDF document text
    • https://chp-travel.ir/data/file/16852917629.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608473075f994---zomolaminakeduvanisi.pdfIn PDF document text
    • http://aquatrustfina.com/userfiles/file/gelanabib.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/kidimopofu.pdfIn PDF document text
    • http://sewakendragroup.com/userfiles/file/luporajotiwed.pdfIn PDF document text
    • http://df-2.de/images/daten/file/zodepasarad.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082c582ba39a---zidirebinatabitanike.pdfIn PDF document text
    • http://vorne-sitzen.eu/pcms/content/file/63295132457.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e653011ffa---wudewaxenedepuvita.pdfIn PDF document text
    • http://al-farh-iq.com/upload/userfiles/file/33217690354.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/a2dbab89d4b4d0ec9337720dba98ca64/72793549450.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d932d1c025---92693011650.pdfIn PDF document text
    • http://gerocuki.hu/user/file/15303858115.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606cee9e250a0---rimoze.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/1260314555.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/15uavh6r4hnq1t95ldtprh1an5/doviguruxazavudesisafeze.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/16tud9qdhhgnhpun19j1que1eo/92450903227.pdfIn PDF document text
    • http://guyfamilyreunion.com/clients/41950/File/nimijivo.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/2ehuasqp32ikvl1u6edhs24ef6/54777430847.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dde96dd1d4---2652691442.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=tide+schedule+indian+river+inletPDF 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_off0001530c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1530C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B23 10476 bytes
SHA-256: 82dc1499fd53319b33b7965e75277d1a5615ade1a4f847fdff08785c523f41b0
font_02_sfnt_off000182e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x182E1 16408 bytes
SHA-256: 4135308f62d898ec327e2261cf70d549f6b68f237aa1566535a460a276a123ae

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