Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee96711eb21fe029…

MALICIOUS

PDF

82.2 KB Created: 2021-09-20 09:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 8a41955a6d46f4c95200876dbd851df6 SHA-1: 17c2371f346f2eb454030c2b0781024a2303c603 SHA-256: ee96711eb21fe02969e4b0cdd1b1e6f06e2fe2fac5a357182656f71b22e72b29
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains embedded JavaScript, indicating an attempt to execute malicious code. The PDF also functions as a link farm, directing users to numerous external websites, many of which are unknown or suspicious, suggesting a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d81c268e87---fobimozomedetewozowov.pdf In PDF document text
    • http://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/49149853945.pdfIn PDF document text
    • http://hycxchina.com/filespath/files/20210911171006.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/015303aab170a41d0997fd2960b18571/59186174310.pdfIn PDF document text
    • https://wickedcheesy.com/images/file/57811100490.pdfIn PDF document text
    • http://stapper.de/sites/default/files/userfilesfile/limagageluraf.pdfIn PDF document text
    • http://innova-perila.ru/upload/files/wegofikolokuxopejejit.pdfIn PDF document text
    • http://eschool365.in/js/admin/uploadfiles/file/xomatanazamidurupulonigok.pdfIn PDF document text
    • http://fruitsad.pl/images/file/45021451616.pdfIn PDF document text
    • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/wikebazotebujixad.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/51189431234.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161302dda28f74---zodej.pdfIn PDF document text
    • http://lmleadmanagement.com/userfiles/files/51192192442.pdfIn PDF document text
    • https://sandipkumardutta.com/ckfinder/userfiles/files/panodowopurezajapanubutof.pdfIn PDF document text
    • https://mytshirtcreator.com/app/webroot/files/file/77233474495.pdfIn PDF document text
    • http://ewhamd.net/upFiles/ckeditor/files/43094342883.pdfIn PDF document text
    • https://egca.fr/userfiles/file/davoboregabodeti.pdfIn PDF document text
    • http://rentappli.com/tinymce/jscripts/tiny_mce/plugins/phpimage/phpimage/upload/images/file/37582533125.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/9166784212.pdfIn PDF document text
    • http://infoegrafica.com/userfiles/files/60627811225.pdfIn PDF document text
    • http://duonglaohanoi.com/userfiles/file/dupabatonizigexul.pdfIn PDF document text
    • http://jualumnitoronto.com/editor/uploadfiles/79271874139.pdfIn PDF document text
    • http://budropol.de/Upload/file/8491763750.pdfIn PDF document text
    • https://mimpishio2bet.net/contents/files/12033046912.pdfIn PDF document text
    • http://sewakendragroup.com/userfiles/file/36038790377.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+use+zfont+appPDF 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_off0000de6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF683 10352 bytes
SHA-256: d3f895cd6d380e7f228369ead39a6f4f9c78ba52ef4a9eba0ccf981acfdd477e
font_02_sfnt_off00010e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E24 17640 bytes
SHA-256: 6269f765e20f8ba98e1d0ffcb732d79720130e9f1587aefddf31683149f5370d