Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d4bb6eadad8249…

MALICIOUS

PDF

91.7 KB Created: 2021-08-01 17:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 612d2234278c693d69ed94f4d46c93e9 SHA-1: 7512f75c4555f01d17b17c9832816ad4ead95bb9 SHA-256: 03d4bb6eadad824934d69c2412a26295638c83907c048f2c30fcfbd99911f481
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to lure users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 http://copy2d.com/ftp/image/file/gijifoluxazevodixokelexo.pdf In PDF document text
    • http://jentretiens.ch/uploadimage/1157769880.pdfIn PDF document text
    • http://mutitar.com/user_img/files/lijidomujug.pdfIn PDF document text
    • http://vitajeans.com/ckfinder/userfiles/files/wapofivifinumekaluzapolis.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/c4262b604a5b6b53bb31ce816178054f/37555392950.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/22142846445.pdfIn PDF document text
    • https://htchninc.com/d/files/tubago.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/5312147206.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a65fd62c1ed---91195621993.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4kptj4irm218vbvr97na60pb73/vimifiteziwigovi.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf60c901aa---96017989257.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ce34c29b7---69646851673.pdfIn PDF document text
    • https://www.parquesanalbertohurtado.cl/ckfinder/userfiles/files/26142187381.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/35520381295.pdfIn PDF document text
    • https://tort-art.ru/userfiles/file/pafivabana.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a68c4de7a0e---tiforezevalokilot.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a51dd61466b---16699987622.pdfIn PDF document text
    • http://a-swiss.com/upload/userfiles/file/93316075704.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/77691971247.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0e9e290ba---52194909945.pdfIn PDF document text
    • http://gianphoiduyloimodel.com/Images_upload/files/sevojopejujikebusov.pdfIn PDF document text
    • http://coming-c.com/userfiles/file/jaxowifawez.pdfIn PDF document text
    • http://www.nomorcantikjoss.com/file/norizetoziwelivu.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/k1l5iivfn0kpc4jvrorgiqqhle/26357402550.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/1c35100a4e7252203df659dd037181db/fajadux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=baaghi+2+full+movie+hd+download+filmyhit+mp4PDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC6 11296 bytes
SHA-256: 249fc79051a84589052f6923cc42c56a0ea728df35a3e02aabcdaf0f4d4003ee
font_01_sfnt_off00011912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11912 17588 bytes
SHA-256: ba9efb88467ddc5da70804473214cd891423c890a4719d04f85f35ff459fb216
font_02_sfnt_off0001470c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1470C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1