Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2beac367e4dca59…

MALICIOUS

PDF

124.9 KB Created: 2021-06-26 01:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: aa701d8193c317bd0e0f3416083d6639 SHA-1: e407066a2460d126e9b590da7e2d994bd167c69d SHA-256: b2beac367e4dca59aeed56e5089ee1f3e69ac76771fc2360a018659bded7729f
156 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with multiple heuristics indicating it functions as a link farm. Numerous URLs are embedded, pointing to various domains, including those hosted on compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure itself is designed to present a collection of links rather than readable content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://drafthe.ru/uplcv?utm_term=co+authoring+in+teams PDF link annotation
    • http://centrons.com/uploaded/file/151522740660c95bda24d7c.pdfIn PDF document text
    • http://webbuilders.com/files/file/vilepeluvowaweniwuxududu.pdfIn PDF document text
    • https://digireg.se/upload/vemagikazoselavap.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210522055819.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/buofigc601upvgvd70dl30aon2/74953037634.pdfIn PDF document text
    • http://bizbecho.com/pa/trainstation/uploads/image/file/mebavuzubimivazatozo.pdfIn PDF document text
    • https://pharmnet.cz/ckfiles/files/files/gifupuwisorulotak.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5ff5a9093---85550944201.pdfIn PDF document text
    • https://aviatroglo.fr/IMG/file/74730206144.pdfIn PDF document text
    • http://erex.hu/upload/file/felovegufo.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/fbaeea1b8bb249fc51fe2d470359cea1/12701387531.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/o6u7reu237te7daj1mosk4fssk/keserefupina.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16093e101bbbf3---wozefe.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081eea68742c---xawowadofamiwev.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/limosiziwinasof.pdfIn PDF document text
    • http://haustechnik-hagenauer.at/wokekidofipegafotuz.pdfIn PDF document text
    • http://innotack.com/userfiles/files/23122486730.pdfIn PDF document text
    • http://nordicaluminium.ru/userfiles/file/tomivuvazo.pdfIn PDF document text
    • http://rokakisreunion.com/clients/a/a8/a85ca1e4cfc2bb88d767af442173b437/File/dewavuzol.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160c566bea846a---pubejotewefuniparem.pdfIn PDF document text
    • https://hashtag.school/userfiles/file/dekaraxoxesibozuwelomefat.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2e3a770cf---89801861640.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_off000186e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186E5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00019ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19EF7 18024 bytes
SHA-256: ea046e06b2f9491a8a279db54af9eb6baf6f8ff75efb9931bdc3e31f35817984
font_02_sfnt_off0001ce59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CE59 10640 bytes
SHA-256: 16924c45b1f62a1eb3d4709fa2822abe80a1ca4f4203445f12214e28a7cf7d8e

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