Malicious PDF — malware analysis report

Static analysis result for SHA-256 60eab32e8d1dbf3e…

MALICIOUS

PDF

83.6 KB Created: 2021-08-25 14:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b7838b8e92646aeada18686df5133d81 SHA-1: c240f21e159613754e6291e1fe94510d1922cbbc SHA-256: 60eab32e8d1dbf3e4f7214d672bb733123d894995c6f60cf860e77bf9c703bba
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics indicate the document functions as a link farm, directing users to multiple potentially compromised websites. The presence of numerous unknown URLs suggests an attempt to distribute malware or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/16087df30c1cc1---zazovarademafoparo.pdf In PDF document text
    • https://highlander-inn.com/assets/userfiles/files/jebidufodofajositisebevad.pdfIn PDF document text
    • http://dzbnf.com/upload/file///3800596807.pdfIn PDF document text
    • https://elsadaulte.com/ckfinder/userfiles/files/77186015251.pdfIn PDF document text
    • http://vigen12.com/userfiles/file/xenegopifodit.pdfIn PDF document text
    • https://inijariku.com/ckfinder/userfiles/files/petezosar.pdfIn PDF document text
    • https://gymlesgeants.com/upload/editor/file/7664132358.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/56b95efa8309b1358b17ace1139ec00c/vujukapenesapo.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/448110805.pdfIn PDF document text
    • http://zygzak.eu/foto_dane/wysiwyg/File/fexibusufuxodatikabevanez.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b935013347d---48468948191.pdfIn PDF document text
    • https://evermoral.hk/upload/file/1624042519.pdfIn PDF document text
    • http://beveragesgs.com/userfiles/file/12675068568.pdfIn PDF document text
    • https://biographiewerkstatt-singer.de/userfiles/file/lijesevu.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/eeec3fd55c079dc5fc02725fa28f934d/ruxodamovewevidum.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ad6a8423adf---92978919532.pdfIn PDF document text
    • http://edwardlankin.com/clients/86087/File/96616828947.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be607380ed---58633435307.pdfIn PDF document text
    • http://sobinco.cz/ckfinder/userfiles/files/38481564513.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=psw+interview+answersPDF 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_off0000e81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81D 16632 bytes
SHA-256: 5099c61082d4dea007cc164e700efe41002a0c12a8ca0c08f7a6c683fc752ac6
font_01_sfnt_off000112e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E2 10088 bytes
SHA-256: 38f89ba024e57dbcf704421571e38c911cb2667a752396b0534439673ecadadd
font_02_sfnt_off00012992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12992 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1