Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb69087742ddcf9b…

MALICIOUS

PDF

125.3 KB Created: 2021-07-26 00:37:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 55f62c14058fcc0a9c31c100cbd21d05 SHA-1: 70be5be8db62fd813b3c9aa11b7e1e14d1552c9d SHA-256: eb69087742ddcf9be9acfb0f61145e3f85738672679620d4f6e53e824691f0ef
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics suggest the PDF is designed to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9772

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://ash-graphy.com/userfiles/file/biwazazerawif.pdf In PDF document text
    • https://biorenta.lt/ckfinder/userfiles/files/56600565161.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a95f8694202---60161607524.pdfIn PDF document text
    • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/rumegokenalenopapa.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/96566682667.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/0fdc8c1272ebbb68e5991c93eb9780c1/56539499192.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd4e389cf6---54081120192.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/27229296693.pdfIn PDF document text
    • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/61308004402.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16070255ad6846---sojerijelakomorepapapo.pdfIn PDF document text
    • http://chinalabware.net/d/files/pikolatekubukezororis.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f18b3f38b7---43233992764.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bc4dc7805ff---5795345903.pdfIn PDF document text
    • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16077db71ecba2---vegunejagomuzitozon.pdfIn PDF document text
    • https://chambredhotes-savoie.com/ckfinder/userfiles/files/9765644540.pdfIn PDF document text
    • http://azbuka-d.ru/ckfinder/userfiles/files/wosuredox.pdfIn PDF document text
    • https://asiahijau.com/contents//files/monefujalepomozafeze.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd352563de---duvezerumatigarimofaxo.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/xisuwa.pdfIn PDF document text
    • http://primaria-ciocirlia.ro/media/file/tisedaxinawamigozobamirib.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/p2ccnsosraakr4v1ek231lsufg/piwes.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/20210513/210513205608144475d94ip5jy2yd3.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8705ba271a---penikiwovavavotu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=%D9%85%D8%A7+%D9%85%D8%B9%D9%86%D9%89+%D8%A7%D8%B3%D9%85+%D8%A7%D9%8A%D9%84%D8%A7%D9%86%D8%AFPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001612b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1612B 33416 bytes
SHA-256: c7e033c0fe27a41e43de7c0755c770077726892c3cadcdc492ff970e060adb60
font_00_sfnt_off0001447b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1447B 18104 bytes
SHA-256: 1f77319a8b10f2c122438d9231427b1283bb42dc5f563045cb14f5648632663b
font_02_sfnt_off00019b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B58 8984 bytes
SHA-256: 1155eef8b03fb48db8196c62fe92ea0367c3129ef5e52290f3da045cb9446085
font_03_sfnt_off0001ad7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD7F 2348 bytes
SHA-256: b754269a00054caaa90d05ec11b811dc8ea39fcfc230d3e423379135d4fd59b0
font_04_sfnt_off0001b7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B7E9 17072 bytes
SHA-256: 428d0430e6bad91c8a894bc18df4cd76855f2f51d68311c9bdc587fbfa61f0a2

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