Malicious PDF — malware analysis report

Static analysis result for SHA-256 3698f2c6af942d22…

MALICIOUS

PDF

84.5 KB Created: 2021-06-29 12:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 0ebebc6a272a95f8c37f4dff6f880241 SHA-1: 48769d878959e12e4a7422295368222c6209ff79 SHA-256: 3698f2c6af942d22afc1a90814711f9340ce7f6658672c5d37449d034afcc907
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as a phishing trojan. Heuristics indicate it contains a link farm and a lure to execute commands via the clipboard, suggesting it's designed to trick users into running malicious code. The ML classifier also strongly indicated maliciousness. The document likely serves as a dropper for a secondary payload, leveraging command execution lures to facilitate this.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://huntic.ru/uplcv?utm_term=homer+was+a+famous+greek+poet PDF link annotation
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/f021074110b695cafb1f21b68dcadc96/roletise.pdfIn PDF document text
    • https://sonarmusic.hu/up_image/file/42155118459.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090fe3ecdfb7---39193135800.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-16/20210516094846297419.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/jefilojidina.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa78e998f5c---20858662922.pdfIn PDF document text
    • https://bataretak.com/img/files/file/xopeziw.pdfIn PDF document text
    • http://bpabv.nl/uploadfiles/file/46530715094.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/pt0foaoj0dargfnj14evnda527/votesomepetetuviz.pdfIn PDF document text
    • http://ccshecea.org/upload/files/gexumaxukizorom.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9cb645cde---vomativitiv.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/nioro0bn7n1as4rnefrjh8km6r/nupitazuketo.pdfIn PDF document text
    • https://bruceautoservice.com/files/file/poxive.pdfIn PDF document text
    • http://offerseir.com/basefile/offerseircom/files/5181951713.pdfIn PDF document text
    • http://quanhoangtsi.com/upload/quangtri/files/98620851771.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///108880889.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a58d6db5538---287569085.pdfIn PDF document text
    • http://volamtuyetthe.com/userfiles/file/bugajifikuwurewafagirorij.pdfIn PDF document text
    • http://an-ocn.ru/ckfinder/userfiles/files/7732072188.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/q3alc00etgulm3q1u7jqtk4v2r/89360175217.pdfIn PDF document text
    • http://msnladyboy.com/ckfinder/userfiles/files/25543448920.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/v71kpsdtjs1fqn33op4bak9j4b/detosusuwetoxu.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1b94bc624---kikuzejolug.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6eddaaab4---dakatemegovujupofinek.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_off0000e959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE959 16432 bytes
SHA-256: b365eff5be6f713a9881f53e11cae9f80824e262b971b780f09a862aa3f76313
font_01_sfnt_off000113f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C0F 10728 bytes
SHA-256: 30bb72cdeb99abcbd5fc397f0a28f439af675ee995b265657b36c54509943da2

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