Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67211d22d483d45…

MALICIOUS

PDF

83.5 KB Created: 2021-09-08 01:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: b9897378fff1211f7e7f7a6626601bab SHA-1: 4bcf737c8cada6b612da5c9874353c93ad75748f SHA-256: e67211d22d483d4550099890ec592113a149a3dd804cbe1c7f140d1bb7afba20
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • 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 http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba0eb8b911---8714626591.pdf In PDF document text
    • https://avigailpekelman.com/sites/default/files/file/79187568641.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a3140190763---55048015507.pdfIn PDF document text
    • http://haki.vn/uploads/files/71669085957.pdfIn PDF document text
    • http://daindnc.com/fckeditor/userfiles/file/wojuwidirugunexozumu.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/69e3194617da91cd00d19ec1ddd42fb9/wotuw.pdfIn PDF document text
    • https://hostsolutions.ro/app/webroot/files/userfiles/files/pazemi.pdfIn PDF document text
    • https://cr2tek.com/userfiles/Proj_Name//files/lujubutu.pdfIn PDF document text
    • http://varanini.pl/userfiles/file/xafosodosedemamekaj.pdfIn PDF document text
    • https://www.ndgai.com/wp-content/plugins/super-forms/uploads/php/files/i5c117gq52gs4u585jhiviak7m/jexutolusefulu.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612c9e23d6ee4---82029120567.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/31896855945.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dbec8f1e9af---30337141751.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a10b6fb861b---didipu.pdfIn PDF document text
    • https://markyatirim.com/resimler/files/58040607628.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/591b0fcfc15f757b7b09409a8141f912/tarodifutofegegagatalu.pdfIn PDF document text
    • http://thangmayedex.com/webroot/img/files/buboxefelo.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077545371997---xamagotobifego.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/rsmu4bhcv89fgalvtqncapbipu/dudetaluwixi.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/d1db76d994e12072286ef90e79fbd61f/42644521503.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe79920b30---bovigubukuwusefajorekiz.pdfIn PDF document text
    • http://lesmashclub.com/imgUpload/files/rusij.pdfIn PDF document text
    • http://westernstudioservice.com/admin/userfiles/file/58606633481.pdfIn PDF document text
    • http://minhledtran.com/luutru/files/pixesegudip.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=pulpectomy+steps+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_off0000e132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE132 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF949 10536 bytes
SHA-256: 78e2b44592ad520795ba2437aab3cdd92c5a9e57a17e49288c7171eddac7aaa8
font_02_sfnt_off00011166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11166 18440 bytes
SHA-256: e6449478084e31c944ebc29a352c2dc5a9876e86f6e535e6e3eb7028ab375559

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