Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ee54c4c76c16ad…

MALICIOUS

PDF

83.4 KB Created: 2021-08-22 00:35:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 30ca60cb4719efc93f0f60e1806b85e0 SHA-1: 1977114050bf90e794e31af8fe33c4b36d581fdf SHA-256: 64ee54c4c76c16ade1bab7d053dba76d2335048a060c066562d00d932edbc185
156 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to websites hosted on compromised CMS platforms or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to phish users or lead them to malicious content through these links. The document's structure and the nature of the URLs suggest it is designed to exploit users by presenting a deceptive interface.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.malagatour.es/ckfinder/userfiles/files/narigiwamako.pdf In PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dff567c50b9---53174737388.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/4fd222c33756b8de44597968286b697f/xebaxilodumopul.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/tekewidexerub.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe23c8f18c---lajim.pdfIn PDF document text
    • http://splhardware.com/UploadFile/file/2021072813433573499.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/lixasisosunonokokofawuker.pdfIn PDF document text
    • https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/lmqpip2qrgv6s96j10u8sqmo1r/12960217386.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b812e0202---10317043398.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/xebozekomogosojitegobuv.pdfIn PDF document text
    • http://anhopphat.com/uploads/files/fumavuputuzif.pdfIn PDF document text
    • http://fitviewer.de/files/file/begetomulujafakete.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/3jd9cq10hvqg7juar6ldcpbrli/27308963653.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac05e44823b---pelomivov.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6fe1b21032---77653094721.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/mekejuzoduzesilole.pdfIn PDF document text
    • http://coiffurenais.com/userfiles/file/fizemo.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/161216ba71acc6---dupizokusuno.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/22meb07cst2a27tlggi5f80js5/zexudakibokutisobazej.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/82f7291772e534c9b34f81d0edc65db6/seritulun.pdfIn PDF document text
    • http://aptekainternetowa.net/_mdm_apteki/file/lekuduzowuzanuxosanux.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1611ccf2281a55---85692675554.pdfIn PDF document text
    • http://hkt-optics.com/hkt/images/userfiles/file/43700481465.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd2c461da9---41282031912.pdfIn PDF document text
    • http://didopack.com/files/kidapavupuge.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=project+management+the+managerial+process+with+ms+project+pdfPDF 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_off0000e1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CC 11284 bytes
SHA-256: 41c465ba6cf4d058035e6c0e493bf7e553de15c6bf1eb3c7bbeb0521edfddcd6
font_01_sfnt_off0000fbec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBEC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000113fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113FE 16612 bytes
SHA-256: 74939063348c5d21be90e6c1a234bcd0412a2f5bc0d0534623e7ee2a7a3fc142