Malicious PDF — malware analysis report

Static analysis result for SHA-256 afcd952cc75eb50e…

MALICIOUS

PDF

92.4 KB Created: 2021-07-31 06:05:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 65c784b604c4ba7334f4270bde280f3d SHA-1: 72fb0af1218e2687f5588336dc5c610d531b1e92 SHA-256: afcd952cc75eb50e5813ea91ec4c97fbeafa7f659751805adc07754aaea35a1e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites and disposable hosting, likely serving as a distribution point for phishing or malware. The presence of external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://philabc.ru/uplcv?utm_term=dead+zombie+sniper+frontier+2018+mod+apk+unlimited+money+and+gold PDF link annotation
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160790fca60c42---busasalogolebaj.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160ca06a763543---1669901711.pdfIn PDF document text
    • http://baaningdoi.com/file_media/file_image/file/51887377427.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/5nhte46e79ouvvq94onakhrr6h/70293581208.pdfIn PDF document text
    • https://icon-studios.com/userfiles/file/49153844903.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16092a4c28c6b6---73074150601.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b966b0999---86816300975.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/dexiwowemasolafikoromu.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1608090800c236---wuzebewiteginosejofev.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/6c23bf948a7b0a56942c91452d23574b/58859345041.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/8df4f965fa7a0d0e8a6fedb758e4eb90/gonefovikixikuwisopiv.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/83291244311.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608556ec24a5d---doderonag.pdfIn PDF document text
    • http://starlightcelebre.ca/clients/4/43/43e9139217482d7666ce300faf566241/File/1082403396.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/27127200644.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/2ivrenikorv1jcbnoe3qb11he5/jonalagod.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/74388784943.pdfIn PDF document text
    • http://meadclassof1991.com/clients/c/cc/cc689d7a74a098ef67b43942063c7ff9/File/94234419938.pdfIn PDF document text
    • http://2446665a.ru/ckfinder/userfiles/files/zakavasuzevasoxaruv.pdfIn PDF document text
    • https://rocksoliddesigns.biz/userfiles/file/lupoledirobofin.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/fimakolarusozus.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b311467bab---38481164102.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_off00010158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10158 17116 bytes
SHA-256: 286617e0fd16c7807d2fc5a715eefb0ffa7c046184eeef0087631e320636046f
font_01_sfnt_off00012e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14638 11852 bytes
SHA-256: 52c75cc76163c9f607aa63bc399e17e9a09e4310338daf6eb7dcb64d706c2556

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