Malicious PDF — malware analysis report

Static analysis result for SHA-256 60308d4226d7a619…

MALICIOUS

PDF

83.8 KB Created: 2021-09-13 11:30:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 6aa10b926b6f07248fbd1973088d94a6 SHA-1: bd0d45449fa8b41fcf778f02c545c0dd4631ed6e SHA-256: 60308d4226d7a61977c12b788ff4f3331e0cecbdec2a3b5d911613fea1d12763
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many of which point to disposable hosting and are likely part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/uplcv?utm_term=how+can+i+see+who+liked+my+video+on+instagram PDF link annotation
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613ebeb6cde53---moduka.pdfIn PDF document text
    • http://bekescsaba.varosom.hu/userfiles/files/zilodesuvot.pdfIn PDF document text
    • http://cuadepthanglong.com/images/ckeditor/files/85166318581.pdfIn PDF document text
    • http://benhvienlaptop.biz/userfiles/file/lukopes.pdfIn PDF document text
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/pinanusevutivaponenere.pdfIn PDF document text
    • https://www.corpeverest.com/ckfinder/userfiles/files/rujumoxipufifuzaxeboxewax.pdfIn PDF document text
    • http://fcgo.tw/uploadpic/files/numumivisalazu.pdfIn PDF document text
    • https://cytokin.ca/upload/editor/file/xazawinejozozikiruvepina.pdfIn PDF document text
    • http://abwfinlay.com/uploads/files/laxomuzoranotoberilomozov.pdfIn PDF document text
    • http://frutapac.com/ckfinder/userfiles/files/dodabunevefujulijonuve.pdfIn PDF document text
    • http://fantasymusic.it/userfiles/files/retaliwovu.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c788fd47bc---totonerejevumubudekipupen.pdfIn PDF document text
    • http://espwireless.net/uploads/file/49717395149.pdfIn PDF document text
    • https://highlander-inn.com/assets/userfiles/files/lefedibedipo.pdfIn PDF document text
    • http://www.polni.si/Images/files/baperomanudalufukanibuz.pdfIn PDF document text
    • http://binhchuachay.info/Images_upload/files/susagif.pdfIn PDF document text
    • https://successalpha.team/upload/files/61483905552.pdfIn PDF document text
    • http://stickers-moins-cher.com/userfiles/stickers-moins-cher.com/file/fofifejulemududonigefisi.pdfIn PDF document text
    • http://nyitotthaz.hu/userfiles/files/sapokiso.pdfIn PDF document text
    • https://laser123.com/geektic/files/sipufowiwiwez.pdfIn PDF document text
    • http://chinasoftcore.com/userfiles/file///18664580859.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/1684860060.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_off0000e01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01E 18316 bytes
SHA-256: 5ed8aa6dedba884b178a9896e607b8a616758f226249aa2edb7f00bcbc872d6f
font_01_sfnt_off00010f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F84 11164 bytes
SHA-256: 831f8da1d15b8ec4ed67c04529f596c5150bd67f1baabf2c186121ffc9de3513
font_02_sfnt_off00012938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12938 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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