Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03c6dc2ff80f6f5…

MALICIOUS

PDF

94.7 KB Created: 2021-08-02 23:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 445574ad0be5a52d83f60d429acb25ac SHA-1: 0a876fb12211fdf5d6b9d892254ba5eda02e0b2c SHA-256: f03c6dc2ff80f6f5f948e23b95df8cd78680e09784cb1f428236ae2ced8377d6
172 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, indicating a high likelihood of malicious intent. It contains embedded JavaScript and a network of links, some pointing to compromised WordPress sites, suggesting it's designed to redirect users to malicious content or downloads. The presence of a download button lure further supports the phishing or malware distribution objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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
  • 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.
  • 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://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/ad3b720c3afdd045f45ddfa85c8361ac/6326915678.pdf In PDF document text
    • https://asthasupermarket.com/userfiles/file/kejiredobizefezaboj.pdfIn PDF document text
    • http://afslab.asia/upload/files/lonupafagowamizesezagok.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609e84ff54186---juxanarapuf.pdfIn PDF document text
    • http://holzbau-napetschnig.at/24354239235.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607015a60bd11---najisevadi.pdfIn PDF document text
    • http://ettermanenterprises.com/ckfinder/userfiles/files/27194383292.pdfIn PDF document text
    • https://peoplesmodelinternational.com/ckfinder/userfiles/files/jazilonigosidibiforituw.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/9d66d5a422d754a665b43c47c79637dc/28319286482.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/benefokarutuge.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/r0t6sqphnttvf06rk540kvbt8b/89053677660.pdfIn PDF document text
    • http://pcserviszlin.cz/ckfinder/userfiles/files/zorubugoxilalar.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161008514cb981---puteliridiwel.pdfIn PDF document text
    • https://apronorte.org.br/ckfinder/userfiles/files/xaroxubajiga.pdfIn PDF document text
    • http://wabasnb.com/files/fckeditor/file/83445485960abf0c201d62.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160980ddae17fb---nivujok.pdfIn PDF document text
    • http://algeos.us/js/ckfinder/userfiles/files/wivevupupegi.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160e5f6ba6d57b---13932731667.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca234215268---dukavuwuripoj.pdfIn PDF document text
    • http://www.alrafeef.com/faisaliya/js/ckfinder/userfiles/files/kenetujiviwenobumelub.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/kjhvusio07ctdck8d59rslkh2o/81427690070.pdfIn PDF document text
    • http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/18661198192.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=fish+adventure+aquarium+hack+apkPDF link annotation
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE56 10992 bytes
SHA-256: 3e51782c57632267d2c0692ee89b64e4b15d9a102e3c0d2856d0c4f195394986
font_01_sfnt_off0001077c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8D 16164 bytes
SHA-256: fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467
font_03_sfnt_off000134fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134FA 1692 bytes
SHA-256: 6df00093d1a1fd8b8f95901b42ba2863538c90606311dd4adf1993a433792d13
font_04_sfnt_off00013cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CFE 17840 bytes
SHA-256: 05679db9e225e515a9053f57187acc8460e35c52e707a5e2fdcb9c72780147f9

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