Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eda6c62e6f12b1c…

MALICIOUS

PDF

88.0 KB Created: 2021-07-01 15:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: fb12f4f5b8940cbae0a56b03a75abd5a SHA-1: 4ac8c84d3dac0467c69ce112d6555e3af05849a9 SHA-256: 5eda6c62e6f12b1c1f23d7017426af51ac61a9a51b6ab5caf1283423eb719026
196 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and ClamAV as malicious. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document likely instructs the user to copy and paste content into a command-line interface, a common tactic to trick users into executing malicious commands. The embedded URLs suggest the document is part of a link farm hosted on compromised WordPress sites, likely serving as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://pistant.ru/uplcv?utm_term=packet+tracer+answers+ccna+1 PDF link annotation
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/bb998d21888acc2eaec3e61ed68509b4/roputipekemoxutuvusefup.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/zemetafitumonozelinaj.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a66c9678f07---95450833290.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1bdfe5b1b---50895402985.pdfIn PDF document text
    • https://atl-50.com/files/file/38192764237.pdfIn PDF document text
    • http://njuhome.pl/ckfinder/userfiles/files/78769094185.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/2a59da4602fe7a47994f58bbefb03add/mijibekuneluwokupifuropij.pdfIn PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/a37382f5d4581accfe529aab2889130f/51366202444.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/ajewaz.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c15f1cf0c81---86136357034.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210604101952.pdfIn PDF document text
    • http://brlairport.com/images/file/goxarotojidetofudovofu.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/13338425754.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/16ee07eu2gkqccjo760ij8l1ru/77760921770.pdfIn PDF document text
    • https://menu2uplus.com/images/file/migemejuzonuxumabese.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8af356ec9---tugeva.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b6309d381fe---giwawuligitula.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160889ec119bb6---8266267838.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d7596236e---digatuvafanukovi.pdfIn PDF document text
    • http://yuha.be/_files/file/5698533260.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16086e8ae2989d---siwufuzakekewamobolus.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/kagekedurisorukewumuwitaj.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/fd940bf72b9d1709ea06d5fd2d6aa75e/zuguk.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/64b6cd7370b7070826be680cc97285fa/suwaka.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF655 16804 bytes
SHA-256: 8f3e8634644493fe0f7dca1feaef5d79d1322044c8e9ad5cd623650c65b75008
font_01_sfnt_off00012204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12204 10196 bytes
SHA-256: 6640b1aa20b5eeb2b5cac46274196b9cf0d55da3ef192539da40db955f2e1b6b
font_02_sfnt_off0001392c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1392C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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