Malicious PDF — malware analysis report

Static analysis result for SHA-256 30577c5b99073ce3…

MALICIOUS

PDF

582.1 KB Created: 2021-07-02 06:21:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18
MD5: aafeb468d8d42e076028de78e4b948ae SHA-1: 5abab1dd944ac44cd69f3ba141423c8c7d5f5665 SHA-256: 30577c5b99073ce338ea2a79fc31aa349b54fa0b66f7929814e5f3b593a370c6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier also indicate malicious content. While no scripts were directly extracted, the embedded URLs are the primary indicators of malicious intent, likely serving as a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6579

Heuristics 5

  • 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.
  • 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://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/39596542595.pdf In PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bab0fa7feee---zawolivu.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/7588ef4e9f55f4550b889d0f28997e99/pagozudamuxejuxi.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/c66f0598154249dbaaf5d8917ba3e2b1/18938967070.pdfIn PDF document text
    • http://dunajecbiala.pl/upload/File/26854489030.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/38d196c930a89dcac05bf2c381ef2bc8/duwalelage.pdfIn PDF document text
    • http://osc-pribor.ru/products_pictures/file/53820835158.pdfIn PDF document text
    • http://wonikqnc.com/upload/editor/file/1622511970.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160730bf21d208---naduridefu.pdfIn PDF document text
    • https://cargotavio.ru/files/file/15249415924.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16094e5e08dd39---sajawurenud.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16080c9fff011b---56164925505.pdfIn PDF document text
    • https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/c21d0fc71df91ab27730a2d14b7944d2/sazararavagesedatobew.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/9324bdc0490076972f7ed588399f0358/kajorajupuf.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b49f83719---mifedemibikukav.pdfIn PDF document text
    • http://xaydungphongphu.com/uploads/files/52795143691.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608753ab5370c---zojezukazofelavikifetokiw.pdfIn PDF document text
    • http://palakkadtourism.in/ckfinder/userfiles/files/67637173851.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d613e76adb---fenod.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/15831764324.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/89122d311da14a765f8c71bf6deeab76/zekomozebefodixenuluj.pdfIn PDF document text
    • http://kahounova.cz/userfiles/file/wobagukem.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/eaf9f30ee052fa740c72d5ec2adbd7c9/86541450144.pdfIn PDF document text
    • http://anbao.vn/uploads/userfiles/file/wuvefakof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=milady+cosmetology+chapter+5+test+answersPDF 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_off0008a07b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A07B 11288 bytes
SHA-256: b56cd977d7712a60e6747070595e566c0697fc7d77a5e5ae3bbabd5645e6cacd
font_01_sfnt_off0008babc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BABC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0008d2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2DA 19344 bytes
SHA-256: dbbd375c00a53434b137413cc79ee079bf0738dc05e8601c6ca658c7c33920d6

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