Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab089ad225a460a…

MALICIOUS

PDF

80.3 KB Created: 2021-06-24 23:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a99ae8d00b6744dff7e5de630d64cc7d SHA-1: 5ccb9701364d251e203bb3c1ba91896ea30a557f SHA-256: 2ab089ad225a460aa1ce9a3efcba51a0feab07bf5a06984de8e5689430ea331b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://al-farh-iq.com/upload/userfiles/file/66036204420.pdf In PDF document text
    • http://airholic.com/UpFiles/WebEditorFiles/file/dagipa.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f98158a712---zudemonunulama.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/c98e7c0f3448b04d52a7c117c2880f25/76271360745.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/16794365026.pdfIn PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/03c210f385a3e5adf92c0040d4cd34e0/39909960966.pdfIn PDF document text
    • https://exporoaster.com/app/webroot/files/images/pages/files/tojamaratogowifegagupum.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b34a0ad0e19364b943883f8a0fd558d6/wasoganuf.pdfIn PDF document text
    • https://fairtradeportal.pl/userfiles/file/47818554364.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/18d17db89543146577f3f2fb5936a3f4/31632396745.pdfIn PDF document text
    • http://chi-kara.net/userfiles/file/71599229027.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075eab9928f0---25723992245.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/9bc70effbb2025d3b1a9518d41d81745/78846937305.pdfIn PDF document text
    • http://scamps.biz/userfiles/file/rixikesur.pdfIn PDF document text
    • https://www.haievent.com/wp-content/plugins/super-forms/uploads/php/files/vh208kgmfoqrq8kun8nf1gij4b/lebemidavozivipakivado.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/fizakukebamedodezapokaxo.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d3e8f81c0eb---49047355495.pdfIn PDF document text
    • https://irish-setter-zucht.info/ckfinder/userfiles/files/vunebulawaxolipixufujetir.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/05ecd482f0402bf274d941cf0fcdc12b/wamos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=arabic+logo+maker+free+onlinePDF 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://scripts.sil.org/OFLIn 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_off0000e1fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FD 5216 bytes
SHA-256: 7b4cfa1f248f29b9227c01174420922a55bb76073b2772ea247c9d1df3e8de1e
font_01_sfnt_off0000f3ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AC 11136 bytes
SHA-256: 9b8528a0972c5242364c17cac2075469737ba3b008dbdc5d14c2b31d7519d8ae
font_02_sfnt_off0001198b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1198B 17640 bytes
SHA-256: 2c2b3706db6fce07a181b0c1bf24d3b43b3b9aa883cc061417a74b38818932c4