Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ebe086be4129414…

MALICIOUS

PDF

88.6 KB Created: 2021-06-27 16:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 947d17135259b60b5d391c806a403828 SHA-1: 05b6687006bea45523918bf3a286e7c37bbd05ce SHA-256: 1ebe086be4129414b813b2e79166b8f8e583ea348686a9f22c8d199875d831a4
156 Risk Score

Malware Insights

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

The 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. It contains numerous links, many pointing to compromised CMS upload directories, suggesting it functions as a link farm to direct users to malicious content. The document body is unreadable, but the presence of external URIs and link farm indicators strongly suggests a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607eab4831e91---15041950673.pdf In PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ab4cbd02f---xepelisomiburaxesanuwe.pdfIn PDF document text
    • http://belgium-ex.com/images/blog//file/88172484703.pdfIn PDF document text
    • http://france-ex.com/pojilejiparobuza.pdfIn PDF document text
    • https://dodatkireklamowe.pl/web/uploads/files/56267499753.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/fe63687676820aa170c13a90217777bb/sasokebozumimukuf.pdfIn PDF document text
    • https://banghenails.com/upload/file/lolaviwekigudufej.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210606024220.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/4gfbkplt9m8a74omg0ro1g1lbu/tifinapolujareborunu.pdfIn PDF document text
    • http://tryinvest.eu/userfiles/files/jerapipezatof.pdfIn PDF document text
    • https://mygo.com/ckfinder/userfiles/files/xuwefonipirejep.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607857d18c07c---26578334854.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/75247638043.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1606f424146a8c---15745275547.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085118ed783f---dikosopexi.pdfIn PDF document text
    • http://nordicaluminium.ru/userfiles/file/pisiwikivogovizawisifeno.pdfIn PDF document text
    • http://whkmradio.com/userfiles/file/fibigapitelubewemomedex.pdfIn PDF document text
    • http://519pf.com/userfiles/files/diporuvu.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070022fa3871---beripoxigopolowetutowomuv.pdfIn PDF document text
    • http://heyibnb.com/CKEdit/upload/files/63450717626.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/88258700482.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=forex+market+todayPDF 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_off0000f9e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11200 10284 bytes
SHA-256: ea7f7d547388107c5a780d2af6ebf137f9d039c7a69d58dc285f2b5ef76b18d7
font_02_sfnt_off00012932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12932 17084 bytes
SHA-256: 1a814f86ac84be9b81228896f3093b205721395803cc891a017e529e72f4cc0c

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