Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d369c89576276b…

MALICIOUS

PDF

83.4 KB Created: 2021-08-26 00:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 5d1eaafccc34e07a25949fcfd7f50e10 SHA-1: c50dd8f3df7921665c5a800282f097bca9d40890 SHA-256: 32d369c89576276bd513cd13f23967f133b6442efa8d7eeff00ab019fa483b92
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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=boy+meets+world+streaming+free PDF link annotation
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608c0943db90c---23824574759.pdfIn PDF document text
    • http://staceyasp.com/UserFiles/file/10622340600.pdfIn PDF document text
    • http://wwsm-us.com/files/file/kewovomixuzuwawixokeza.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a241209d2c3---3189988959.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//17933998251.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/fabozutuwodatepubovakot.pdfIn PDF document text
    • https://nsck-cykelmotion.dk/userfiles/file/48330675945.pdfIn PDF document text
    • http://phuclocvienjsc.com/uploads/image/files/31253938540.pdfIn PDF document text
    • http://health-bridge.in/upload/file/91092782588.pdfIn PDF document text
    • http://orem.mn/uploads/files/18244849111.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/e8f901899d5f1b757abca2748d610970/kekikagavapumazewelab.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/qlutscm8jatbae394tsrae9unk/88161539208.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/e414181132698a245e0c022df8a854e5/pelunujonulosonoje.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/dfc346085cb02c74fc405880c405dfd3/89751352811.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b87e7232be8---vaxejubomux.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/16fc138215572b06ac20c511ed9f6199/49264959163.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/paborejuv.pdfIn PDF document text
    • https://fcr-fomentoconsumoerenda.com/uploads/files/vovotixoxokewigasibumu.pdfIn PDF document text
    • http://infinijewelry.com/userfiles/file/94443104747.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/80981782353.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/17471758542.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/9796071441.pdfIn PDF document text
    • http://qiuyutv.com/userfiles/files/20210613053840.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/fumumifekedut.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/ab1874d6053b0af215c1b87ac98628e4/wupivavixovovusako.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d7b98104a---9107426256.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/161194a2b2c6a7---49703281836.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_off0000dfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B2 17236 bytes
SHA-256: 827667ddc84965d5981178e94bc5a4397ead142baa705f2844289f121f4f3899
font_02_sfnt_off000124de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124DE 10952 bytes
SHA-256: daebbecf3d94341127eea4a63e8d6621851511d061c1a899952d67e7fc2b11f7

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