Malicious PDF — malware analysis report

Static analysis result for SHA-256 e987f4d80088a162…

MALICIOUS

PDF

128.0 KB Created: 2021-09-18 06:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 447f1e9d341e85fbc173d347aeb3645f SHA-1: e912aa04aba67986c1e7ca91cfeffcf7cf2eeb9f SHA-256: e987f4d80088a1625f5a86fc009390bf6061c52bb5731ce9d2bdba7f56231ed7
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a phishing lure, including urgency language and a high density of external links hosted on potentially disposable domains. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3113

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://infrive.ru/uplcv?utm_term=spotify+android+requirements PDF link annotation
    • https://www.mmgrowersg.com/ckfinder/userfiles/files/58443715835.pdfIn PDF document text
    • https://glozorcom.merlak.ru/userfiles/file/36111525405.pdfIn PDF document text
    • https://hanurichurch.org/ckfinder/userfiles/files/31891850976.pdfIn PDF document text
    • http://liqaa-lb.com/files/userfiles/files/75540230114.pdfIn PDF document text
    • http://webcertain.asia/contentupload/fckeditorUploads/organization_/file/2881515165.pdfIn PDF document text
    • https://mongolia-volkslift.com/uploads/files/9727962931.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/ridolagagotesifav.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/sixuwopijabekiwozobovagam.pdfIn PDF document text
    • https://investincarpathians.eu/app/webroot/media/files/ruzuxes.pdfIn PDF document text
    • http://ubestsports.com/imager/files/20210917065315.pdfIn PDF document text
    • https://horkolas-gatlas.hu/ufiles/file/43852544079.pdfIn PDF document text
    • http://idroter.org/userfiles/files/7317699896.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/759bc2078c8e67c64bfd27cbbf4dd81d/22840965622.pdfIn PDF document text
    • http://robertoantoniz.com/resources/original/file/fejofakivebunidad.pdfIn PDF document text
    • http://pm-property.pl/userfiles/file/jetisil.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/lq47534ha7ukat733ujk3qtdn7/rujamube.pdfIn PDF document text
    • http://avandcie-energy.com/ckfinder/userfiles/files/jalafo.pdfIn PDF document text
    • https://vnjhanoi.com/upload/files/padunovubetura.pdfIn PDF document text
    • https://detskeihriska.eu/ckfinder/userfiles/files/xaparikabirodadufikomedo.pdfIn PDF document text
    • http://techscreening.com/userfiles/files/19453374541.pdfIn PDF document text
    • https://gallerylingard.com/uploads/file/gofofokuwixujutobekutozom.pdfIn PDF document text
    • http://farmina.ru/uploads/files/39516629448.pdfIn PDF document text
    • https://detector-billetes.com/Imagenes/file/1392589282.pdfIn PDF document text
    • https://easyown.ddproperty.com/datas/files/45051462063.pdfIn 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_off00018a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A22 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001a22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A22F 2224 bytes
SHA-256: 503544ef312f6daefeea1abf575de4c2478a061187b103fe3a1ead32dab17db1
font_02_sfnt_off0001ac1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC1E 11048 bytes
SHA-256: 5af6d6bc51839913c3512d3c7c27d755769b01ce00f79a948c1fb411792b45e6
font_03_sfnt_off0001c5a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C5A6 19980 bytes
SHA-256: f552e3e113a0b08a0deb7d26e597f07063b88e68495777d99f157400112389c1