Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b7fbb3203f39af3…

MALICIOUS

PDF

76.5 KB Created: 2021-09-01 13:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 71f0c2300ec11a52f895f733a654b680 SHA-1: 2df3ff74d1de5c1e342df36ff63392017abdf394 SHA-256: 0b7fbb3203f39af35cc3131dc698f7ebf1848e40eb23a2e27104c87a2dd9c7ab
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting. The heuristics indicate a link farm designed to redirect users to potentially malicious sites, consistent with phishing or malware distribution. The embedded JavaScript likely facilitates the redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5474

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
  • 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
  • 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://laborke.ru/uplcv?utm_term=what+styles+were+popular+in+the+90s PDF link annotation
    • https://wodgluch-projekt.pl/userfiles/50586951929.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/r1ee259jae8pflfiu1dsk02mk0/moporerutaxuwuvoduwefaxo.pdfIn PDF document text
    • https://taxfirma.com/userfiles/file/2678283120.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/dqtmg9i3vjvtq290s6seecmh32/kopizawas.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608788b5037cd---jawapojuxanebolip.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/a156e73d4e90d4c9d6111ecf30f677ae/fefolibiselebekozuba.pdfIn PDF document text
    • http://ketnoikienthuc.com/upload/files/popegisoxuvajijemi.pdfIn PDF document text
    • http://hydrem.ru/images/file/3821691069.pdfIn PDF document text
    • http://fygl.net/uploads/file/101219078752.pdfIn PDF document text
    • https://floresdeserrezuela.com/aym_image/files/28029649394.pdfIn PDF document text
    • http://zonwering-belgie.nl/ckfinder/userfiles/files/fadosusopuxonajisugati.pdfIn PDF document text
    • https://aglogistics-bo.net/userfiles/file/netabutuxageromuxi.pdfIn PDF document text
    • http://cuuhoatudong.com/upload/files/82479622373.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bfc3472c7469d7db031284ccc9d1a641/47334088964.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c15cda051bb---mokolapojagokijugulobaz.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160889dee16fb5---nuwupiluwamiluzasej.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/nrp3h0ufmi5va94dne9sqs2l3e/27419254594.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077002cdde82---patemowededof.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/mudupevodobijobem.pdfIn PDF document text
    • http://hb1004.com/userData/board/file/jutakutanomurogamo.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/vixiparolujirigakiposowon.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/78707539842.pdfIn PDF document text
    • https://mediacentre.aerlingus.com/js/ckfinder/userfiles/files/5607724907.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE164 19872 bytes
SHA-256: 84e73e2ff3cf7fe16f48da921a810aad26c856430416ec2153d105df7f8e2087
font_01_sfnt_off00011378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11378 10932 bytes
SHA-256: 86edc4a7b081a6563dae265e5d8cef8ae2dacd5ee6f3baeb21f32e5c216a7cdb

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