Malicious PDF — malware analysis report

Static analysis result for SHA-256 514e44a8dff60731…

MALICIOUS

PDF

82.2 KB Created: 2021-07-07 02:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2a0c6069c963b508c95e7b9d4f5a2601 SHA-1: 658b1be95182fd045f9437e3f1096b2a98e778d6 SHA-256: 514e44a8dff6073188718f71f8d22c0a60baf7a15f6dd1c9617be5bb3ff8a837
204 Risk Score

Malware Insights

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

This PDF document exhibits social engineering tactics, instructing the user to press Win+R or paste a command, consistent with ClickFix attacks designed to bypass macro restrictions. The embedded JavaScript stream and numerous external URIs, many pointing to compromised CMS upload directories, suggest an attempt to download and execute a second-stage payload. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://allytemp.ru/uplcv?utm_term=from+plassey+to+partition+pdf PDF link annotation
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160812662c19d0---pififefedamadujon.pdfIn PDF document text
    • http://bethanybaptistcolumbus.org/clients/75549/File/153725708.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606e8550a9839---16906682577.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/4718438b449e23cc340f4f75aaeecc09/xuparadufid.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/d8889d7befe0d563b285f6f0dd364e3d/fexadexuzu.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/86932199150.pdfIn PDF document text
    • http://xlsferrosilicon.com/d/files/74167020152.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9e859be1b---varuzalovipamu.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1cf9bb9e75---jasagadesekajedilow.pdfIn PDF document text
    • http://idolyokocho.com/js/ckfinder/userfiles/files/50763456794.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/8f86dfdc64bf81f53ca41513e640e9ff/6095371797.pdfIn PDF document text
    • http://recrute.fr/files/files/35847640802.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/dbc9f38f637ec59c4127bc41a75ed1ee/56598732944.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/89759752037.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16083edf3979f7---deguv.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160c773ba27dc6---77082824516.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/kam2o446jid3nmvegpdq9hbnq5/nomodunigesisabi.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d271db02ace---bubopa.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa8c113c3ce---58744191722.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/1565330b783d866816b41e5ff8b22963/99187867132.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/bt83ueaqsiv2ookvt7iaqarr79/rojitaladanizapiked.pdfIn PDF document text
    • http://ohsongpharm.com/ckfinder/userfiles/files/lononopovew.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/17308072787.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825d3225247---98204032448.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_off0000de9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9C 17120 bytes
SHA-256: 9c6112e1f0ee5a2a3e5555947d50369b5d929ec8445125e5692688761a01e810
font_01_sfnt_off00010adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000122f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F6 10748 bytes
SHA-256: f8beee4d9f486ee7350426dd4a2f2534eb723bf538f83f7339d09b68dc4d4b54

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