Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcfb2085bea25bfe…

MALICIOUS

PDF

86.6 KB Created: 2021-06-29 17:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cecdf242ddbfd8bea37e695ac794c624 SHA-1: e8233da114b0f9fe14b3786fc30574637f8a24b2 SHA-256: fcfb2085bea25bfebd31615606c05606461b7456b6c315b6aea20c761d7fe3ea
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links. The presence of compromised CMS upload links suggests an attempt to host malicious content on seemingly legitimate but compromised infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/a979a117ed1cf2a09f9433d40f43decd/firitagegorabosezosu.pdf In PDF document text
    • http://enotecagaribaldi.it/userfiles/files/zedugiso.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/95cc74ab65c69e45142aedad842eedb2/93660787973.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9695c9aa4---18265586820.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/sabimu.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081bbcf86d80---58100134499.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/065cb959855d42efdfe5f8246c5a2e09/gapuvokujofopogavave.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/bee50d0d7e26be51e5de8ccf238830e6/97876079740.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/0fd39ff6114a339de594f8a705d39125/88381376148.pdfIn PDF document text
    • http://ergo-logo-bamberg.de/userfiles/file/74456616482.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819bc81cf56---23144927962.pdfIn PDF document text
    • http://vietthanhstone.com/images/news/file/zozikolukurixubapu.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083918dd59b5---degifexivoxipo.pdfIn PDF document text
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/198a0b9ec33ca53650af012de4991a6d/karigigovojemilamola.pdfIn PDF document text
    • http://agendaalzheimer.org/files/galeria/files/94428026333.pdfIn PDF document text
    • http://nandeestationery.com/userfiles/files/latorelixelizovunekere.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/17658997687.pdfIn PDF document text
    • https://iveducentar.com/uploads/assets/file/wegukiporozexizorel.pdfIn PDF document text
    • https://tantecoccole016.it/file/sexamomeniremewuxo.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad16f9786e6---35277574806.pdfIn PDF document text
    • https://ancoraeducacion.com/images/runem.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/4985b4266637b1e930581731579bd477/betodijavuduporaroratu.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/g46ompgo30g6vo254k2n3q86ai/kokujasetutinodamixod.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/a561fb589f88d5183aaaf7cb46f0cfcd/fujuduvop.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=pearly+penile+papules+natural+treatmentPDF 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_off0000f15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15A 10508 bytes
SHA-256: e17fdf6ad649c4a1c6cf9c2a6802cfa8731c2adab8bd3c5a7c218754c22d0f09
font_01_sfnt_off0001093d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093D 16864 bytes
SHA-256: b96f8a6d37843933d598864e82d2da7387806d1c92e696d46f7e2e3b6ab41c6a
font_02_sfnt_off000134cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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