Malicious PDF — malware analysis report

Static analysis result for SHA-256 1754c0f0f8a73324…

MALICIOUS

PDF

79.6 KB Created: 2021-09-07 03:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0bdfb1e355862754d6f8a578d062f989 SHA-1: 634f582e48e94fa3f690ccf4f3c83e9e97e4ff81 SHA-256: 1754c0f0f8a733244499b5b67f4057567fba05615679dc08a927044a111d33fe
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery through these links. The presence of multiple compromised CMS upload links further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://creativitagh.com/pevron/www/img/file/69931469663.pdf In PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/mirumovopokerowilup.pdfIn PDF document text
    • http://club-integra.ru/userfiles/file/gimetaxopox.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/c205a5bcb6fb506ed2a190ec2786cf96/baretinoxekumevixin.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc02afa253a---41562022642.pdfIn PDF document text
    • https://isabellepieman.com/userfiles/file/39979307785.pdfIn PDF document text
    • http://wwpokebar.com/uploads/files/70463664659.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/61jj614vbfsupptuho06a5sq0q/67814793223.pdfIn PDF document text
    • http://jx4d.com/userfiles/file/40833443857.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f006e9237b---41588315035.pdfIn PDF document text
    • http://ingfrimale.com/userfiles/files/raraxezokisositi.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/qak784qcfvcuq05ileqhtkqnn5/18865463746.pdfIn PDF document text
    • http://xn--80an2aej.xn--p1ai/up/file/77850485301.pdfIn PDF document text
    • https://tidymoney.com/ckfinder/userfiles/files/62306852068.pdfIn PDF document text
    • https://discovercefalu.it/_data/images/file/golagupodupamokoputop.pdfIn PDF document text
    • https://nnt52.ru/userfiles/file/fajesiroderefek.pdfIn PDF document text
    • http://laros.cz/UserFiles/file/27152464371.pdfIn PDF document text
    • http://cmtdental.com/upload/ckimg/files/mixafonanogokad.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160895b28cb86a---63786358977.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/19486e7ff2b86576a434f14f03f0c4c1/zetapilavugonutilevavene.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/95623455620.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/5630e1824a120563bae1527a4cdcde21/guvukexoma.pdfIn PDF document text
    • http://tageedesign.com/ssmpt/documents/file/safuxa.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/87ngd24d9pkr37q6brqhjcjgv1/90700525499.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=action+verbs+worksheets+for+preschoolPDF 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_off0000d43a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD43A 16736 bytes
SHA-256: c80944f685197604861bc8d0e8c926bec64be982678980fbec6516a03bcf707a
font_01_sfnt_off0000ffd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000117ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117EE 10780 bytes
SHA-256: 8142a83f10f5a840e3255435d8cd3b6df3cf1f5bf101c647d6a7c36901b9584d

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