Malicious PDF — malware analysis report

Static analysis result for SHA-256 19a5f79fb6dc4175…

MALICIOUS

PDF

75.2 KB Created: 2021-09-05 23:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 93f29538b4bb1df5ebc76184048c4aef SHA-1: 4a0e3476926df19e507f9e2cdca3bd7f3c2dfd11 SHA-256: 19a5f79fb6dc4175c99283dbfeec43ab9683c309d371aad5b3d769e920a709c0
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous external URIs and link farms pointing to potentially compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The document's structure and embedded links indicate a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 https://drafthe.ru/uplcv?utm_term=top+notch+3+second+edition+pdf+download PDF link annotation
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/2761b473958f4365b07255ce1bad6f36/vesak.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/161234f3f3e8a8---durosenemuverokib.pdfIn PDF document text
    • http://zangerlelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lonawarufewozojef.pdfIn PDF document text
    • http://iworking.vn/uploads/files/47884967813.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160775dfbe2f89---defozunovatesamejokum.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/e6imr81urmirh158ij86h3psm8/vevejajujabemabijofovise.pdfIn PDF document text
    • http://2440027.ru/upload/file/sepegakukugabivub.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/32186461431.pdfIn PDF document text
    • http://eurekaelearning.com/upload/news/file/rarafewojaveke.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161036c1418345---vuvoxirewezoxivuzisomu.pdfIn PDF document text
    • https://charterboatdeliverance.com/uploads/files/12665491534.pdfIn PDF document text
    • https://recapress.com/ckfinder/userfiles/files/nizavusefasikewofuvoj.pdfIn PDF document text
    • http://interstroy96.ru/uploads/files/neduli.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/fegesazasonenijovuxiref.pdfIn PDF document text
    • https://xn--p3t29jo1ed4o4xw.tw/upload/files/23558088774.pdfIn PDF document text
    • http://eotp.info/sites/default/files/fck/file/45245188954.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e4bb2bb3b1---57747339769.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/tr3g3egfqj6ncbd9uthkjuud7m/76174925299.pdfIn PDF document text
    • https://razredna-nastava.net/files/pabofuwogosipakuzaj.pdfIn PDF document text
    • http://basisnomor.com/contents//files/vutewixe.pdfIn PDF document text
    • http://biancoacolori.it/userfiles/files/lanazu.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/a9b36d94186a7b7e655baa17b7439e96/ditazatejugomagufu.pdfIn PDF document text
    • https://nepalimodelagency.com/userfiles/file/58374764061.pdfIn PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/liwinebevozebabuxeful.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_off0000c2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DB 10840 bytes
SHA-256: 0fc8590df136351b64b2a309698826dd7526215e9191e60a4aa2cc3177b4996d
font_01_sfnt_off0000dbed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBED 16412 bytes
SHA-256: f35023e6f0c5699f80aa4323a189c21779632077255e034a137b4157dca611db
font_02_sfnt_off0001068c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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