Malicious PDF — malware analysis report

Static analysis result for SHA-256 002e9ab9db35a8c8…

MALICIOUS

PDF

92.3 KB Created: 2021-07-20 16:05:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 7aaea556de9da6910f980fe33561f0ea SHA-1: 7d2102fea6020f25d943d317c5428bde888897a2 SHA-256: 002e9ab9db35a8c836740d7f4a6e71511cf96e69949b525110ac5f7bf5cb76fb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting. While no scripts were directly extracted, the presence of multiple suspicious URLs suggests an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609046bb9205b---bufeloxumofi.pdf In PDF document text
    • https://aykutemlak.com/upload/ckfinder/files/80050891908.pdfIn PDF document text
    • https://nanosoft.mn/images/content/File/wadag.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608918599b0d2---10277055834.pdfIn PDF document text
    • http://topcudental.com/img/userfiles/files/84917782519.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16071d5a6e7db8---90194708853.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/02a94ad407528fe49f03d3a6bfa19ae4/kabobarotisibolubasekize.pdfIn PDF document text
    • https://promise-land.com/upload/file/buxodapuxe.pdfIn PDF document text
    • http://transsnabstroy.com/userfiles/file/purevos.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7ca049e81---78666074444.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/drpfgcfiqm0br82ojte5bbeak4/tugujawese.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/tvqk67d4i476uuvv9nrae3183g/xobusumu.pdfIn PDF document text
    • http://udmvdpo.ru/images/files/43371967151.pdfIn PDF document text
    • http://temple.mo/userfiles/file/bamazanugemot.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/c1371b3ff4da6cb63dba19905135b658/lufurubabebosubozujixegez.pdfIn PDF document text
    • http://agiteam.org/clients/b/b0/b0c4817036ef1cb73596cc935f3fa86d/File/61964123342.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/mulidaropotamodebapo.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/989815efdd70958264e6b934a43ad185/1235296557.pdfIn PDF document text
    • https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/be9a2c0d5d9f8bae25ea73975f8313ed/saporudedapat.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/bozurejimunasasine.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/79415610523.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609768fd02a09---28438273743.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/i7jlirsrq6kiorv3656un2adff/vewitogerosesiva.pdfIn PDF document text
    • http://dongshengcable.com/images/upload/File/21996116887.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=rapidex+english+speaking+course+book+downloadPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2F 11260 bytes
SHA-256: 638922a6fd03dfe7aae35ec3314819a4e1dbc886a40f046dc22d96d5b146376a
font_01_sfnt_off00010820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10820 16144 bytes
SHA-256: fcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516
font_02_sfnt_off00011d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000135b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135B1 17444 bytes
SHA-256: f8e202ecc2e800282aeca33f044fd22057f6c39b5568799a7abbb114619e6d03

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