Malicious PDF — malware analysis report

Static analysis result for SHA-256 1119e197a36a3f22…

MALICIOUS

PDF

93.3 KB Created: 2021-08-04 19:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 84a59e0c9312e616b2544ed558256b22 SHA-1: b1565dd587cc343f3a06bf269979e086349f0289 SHA-256: 1119e197a36a3f22fbe6c8b6605d36bc163215fe3f220a71c89905dabfe6d95e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are designed to host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • 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.
  • 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.
  • 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://garglob.ru/uplcv?utm_term=harry+potter+audiobook+stephen+fry+google+drive PDF link annotation
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa05e198e98.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0399edb011---fefonanaxuxosikif.pdfIn PDF document text
    • http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/48806105920.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/7q0gl8ufqfpasoch63a12bom9s/refurakodubes.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160798505a1289---96208935039.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop//contents/tizimil.pdfIn PDF document text
    • https://topjobsnepal.com/ckfinder/userfiles/files/92837426224.pdfIn PDF document text
    • http://dralituncer.com/userfiles/file/medabefuxifotusaka.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/bizenozedoja.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f12f15e93---junogubozozemizuxinata.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/4938809046.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/cq82oce1be08t9vh5ph8j14hfs/tuxotazumar.pdfIn PDF document text
    • https://minervatech.work/js/ckfinder/userfiles/files/91274956795.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/fef970bec6225991a10f24e894be81f9/58390180159.pdfIn PDF document text
    • http://volareinmongolfiera.it/userfiles/files/mezebuxexipegivofutep.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608817ab56866---82534457690.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a5fc0923cae---12486169778.pdfIn PDF document text
    • https://luatkhangthai.vn/upload/fck/file/kebikemovoga.pdfIn PDF document text
    • https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070360158add---85936944887.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/f36c2966f74b7cb588edf5c3ff212c2e/maxapokuduwo.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160970986de08b---wejom.pdfIn PDF document text
    • http://burattinojatek.hu/userfiles/file/23112462549.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/914eaca3b0fac8af40339cbea0867f78/poruk.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5a85a127c---31899518900.pdfIn PDF document text
    • 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_off000107e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E7 17404 bytes
SHA-256: 9f4c7998a024e464a9c12bb1f0c496bedd6ec063a72d0f773a3fe9f81a228b63
font_01_sfnt_off00013549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13549 11280 bytes
SHA-256: b2f17e952fcfc62b2dc1765318fb074a623b1c05ce5bce51aed4735f7152eb5a
font_02_sfnt_off00014f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F41 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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