Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9b25b0e6e9a8bb9…

MALICIOUS

PDF

88.2 KB Created: 2021-07-15 14:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: e2d0b3ad32fa97858d2a8f1110aa9ba9 SHA-1: 62cf66a19e961661412bf760a7f2d45ae2fffda9 SHA-256: b9b25b0e6e9a8bb9f9898bcc768fae76a403c5e391f0896e592bae6e2d0dc093
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains numerous external links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing campaign or a distribution vector for further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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.
  • 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=the+time+gmt PDF link annotation
    • http://paglialonga.it/userfiles/files/39665944665.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/um9jq1sge377r2b7e3n9o76327/86797670144.pdfIn PDF document text
    • http://asupuro.com/user_data/image//file/50956902141.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9380542f67---lojaropazexevizudiv.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d852ef715---zowasuwup.pdfIn PDF document text
    • http://studioprogettoarchitettura.eu/userfiles/files/16840319095.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/9ktpitpnkrpj5dj2q2mfmvqggj/96042924315.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943b31ca07b---dugaduretujopi.pdfIn PDF document text
    • https://austdoorcaocap.com/upload/files/56878234042.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160e28ee65bef9---lobixovolunogewere.pdfIn PDF document text
    • https://ovalpolycoats.com/media/97029141371.pdfIn PDF document text
    • https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/08c0303d948ea85960d6e61025a48d1c/kovogokogep.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5ccc93cd6---59130749503.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/72014645181.pdfIn PDF document text
    • https://associazionedynamica.it/uploads/file/zimatax.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/d9403e1684027c87dc587bb43e271380/15957987760.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/stbomb1ac88ummm1gubej9eplf/nofisukalimedizolepijuro.pdfIn PDF document text
    • https://porterbrothersltd.com/app/webroot/uploads/84113823852.pdfIn PDF document text
    • http://electrogalicia.com/electrogalicia/recursos/archivos/zufumemunakig.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/pekosa.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/88509fcc679a3d183de62cccbcd18169/51946459167.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/d81g693j5jd2cq9dg0d2oob4n6/bipoludenikaxesoven.pdfIn PDF document text
    • http://daydala.com/userfiles/file/40524612010.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/j97b2qblnl160tpi2lmv5hvkc3/sukutuguwogeve.pdfIn PDF document text
    • https://guineaservicesproviders.com/gsp/files/xivelamovobijuvok.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/3595b4d2369cdff5448c00cd74bb5b8b/leximibegumazoliwovobi.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_off0000f8a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A9 17352 bytes
SHA-256: a174ee20a88d94041261de190fb67dd5380439ac9401ec86cd9b821c024d9aeb
font_01_sfnt_off00012632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12632 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E48 9816 bytes
SHA-256: 7b99ddd8d4acf003eae260d23ef52d8b157cfa5037fb587d7b6ea669e88fa7fb

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