Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8e438098ec9377…

MALICIOUS

PDF

114.4 KB Created: 2021-06-29 23:21:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 2aa8d7da0382dfcab70f785e13525946 SHA-1: 343aca9eeeb9d6e6e51a8256871d3a04cbcaa36c SHA-256: 6a8e438098ec9377a620004d74156d55bfb13c6bf14cbc0eb253e8875cf71add
204 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous links to external sites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The 'Clipboard command execution lure' heuristic indicates the document likely instructs the user to copy and paste commands into a shell, a common technique to download and execute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9866

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://krisoc.ru/uplcv?utm_term=end+of+evangelion+lilith PDF link annotation
    • https://cardion.dk/gfx/fckimages/file/51524151630.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/wazepavimalulonixazujibar.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/9e9b295ed3a30ce481377641b59f4b5f/10121123447.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1ad9c119e4---wokezunuxibuza.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/v8gcgkjng66imorp8iece8hlg8/99567986392.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160845d542012d---16934111729.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/8efd50daeaa3708ad4d23e721e336b3f/jawafafaj.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/df39cc21f83a8edaa414ff01f41d68a5/debiwagusonoponir.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080cefe84854---ziwavu.pdfIn PDF document text
    • http://mintaialuminum.com/d/files/66627241793.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/zomebuxukime.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/1854d7d3402f7dc1ae81e1d84cfa2360/30329127769.pdfIn PDF document text
    • http://ergo-logo-bamberg.de/userfiles/file/62597704430.pdfIn PDF document text
    • https://computerzone.pk/file/79827912760.pdfIn PDF document text
    • http://panziofabian.hu/fck_kepek/31686499101.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/n7q5d3k8gjqq6g8pbnsnvo2ua1/xodekabevubabif.pdfIn PDF document text
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2fdf61a0f---fatax.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/46472392077.pdfIn PDF document text
    • https://actaviaserica.org/board/file/files/gikovetekanubivefurirediv.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/8031498787.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/18de06992b6400a2eb45fab980df6844/mudoramudigad.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/ced457cb2b2a89b08883b31f4786f8ca/74532427076.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/50efa35c673823772dcef8faa403938d/91813310372.pdfIn PDF document text
    • https://champion-osk.pl/userfiles/file/dedudanebidutasowesibadu.pdfIn PDF document text
    • http://thetuckerfamilyreunion.com/clients/67950/File/50277227144.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0e21a3eca---36773043032.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_off00015fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FE8 17128 bytes
SHA-256: 7bc25bb590d96d07e00a1fae18e10c57e74321fda7aacf905e46228e32a880f3
font_01_sfnt_off00018cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CD7 10412 bytes
SHA-256: 367d4cb953cf89ffd564b272dea4e56c746817f65d39184c80979267ea743c8b
font_02_sfnt_off0001a422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A422 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.