Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dfa5ba59fd94a63…

MALICIOUS

PDF

86.2 KB Created: 2021-07-19 19:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f9487f08726dea653175ae077cf6901f SHA-1: a060a6e25cc0920c42cb3a679a6f2798d90ba9a1 SHA-256: 5dfa5ba59fd94a63cdffe64e025cfdd712c5aa67745185b1a1c4f8c73450632f
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress sites. These links likely serve as lures for phishing attacks or to distribute further malware, aligning with the 'Spearphishing Attachment' and 'Malicious Link' MITRE ATT&CK techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/bd4421fae144b204c4f0cfcd94adf55e/21199166587.pdf In PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608865d621564---xazelifekip.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/lilitavafafukafiles.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f3af01ca4---butitowatevigewi.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ab6bacb4fc7---vagik.pdfIn PDF document text
    • http://edwardlankin.com/clients/86087/File/jixodejurujeleg.pdfIn PDF document text
    • http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/rrk75s373o12bkb7cth6petf86/80548894628.pdfIn PDF document text
    • http://bjaimama.com/data/upload/2021/06/file/202106172358524775.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/f37a346ea26d02fd956d6e8a1fbccf9f/legup.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/hqjfo719lgupkmlncmqqs0viud/83525122699.pdfIn PDF document text
    • https://loyallcanada.ca/editor_files/file/71893545903.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/041356249676.pdfIn PDF document text
    • https://anjingliar.com/contents//files/38830989353.pdfIn PDF document text
    • http://extintoresorigen.com/images/editor/ruxipabetamasunoxazowebud.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d914cb0377f---27206981060.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/27300079409.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/1704539005.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749a700a1f9---fejemuwezikebetazidifa.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c634512d19---97054023836.pdfIn PDF document text
    • http://ydtmuhendislik.com/ckfinder/userfiles/files/35503015030.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef64a05823---gasadigapo.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/4c5b60598e51cbf458f129def4c05f2b/juwukegipilirisi.pdfIn PDF document text
    • http://pastadimatteo.com/ckfinder/userfiles/files/safula.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=holden+caulfield+depression+quotesPDF 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_off0000ec82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC82 17536 bytes
SHA-256: 125c577292364ded5b49d86f8c4ebbbac89c5d8c5dbef552ff58ec1d8c614c2b
font_01_sfnt_off00011a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A64 10852 bytes
SHA-256: 99600801415948facc524398a48f7eb20ffe54cb8ab17b322e33b217b902f2c3
font_02_sfnt_off00013345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13345 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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