Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab0951c95fcc0cd…

MALICIOUS

PDF

88.2 KB Created: 2021-09-01 06:25:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 233588953b802d44b45fd557060ef3a8 SHA-1: 28b8502b48ef5cf098580560db6223a387019f1a SHA-256: 7ab0951c95fcc0cd71206a07cceb9eb821542809669c657dafd077e6da2f59c7
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://iqmuseum.mn/uploads/files/guwuriloxo.pdf In PDF document text
    • https://ladachess.ru/userfiles/file/fimemimararunu.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160811d54bd7f6---42468779576.pdfIn PDF document text
    • http://xn--e42bt3l.net/upfile/files/93405194284.pdfIn PDF document text
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/4311706e2fa667806db59afdc95810b2/26109510818.pdfIn PDF document text
    • http://www.mezmat.ru/ckfinder/userfiles/files/49445463345.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bd9dfd75680---tifivifagavejopuwijorus.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1610aa7280e1a9---forexisozulivames.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba933e16ea1---99738229917.pdfIn PDF document text
    • http://timnhanhonline.com/upload/files/14442114759.pdfIn PDF document text
    • http://kasargod.net/uploads/file/xupidusotode.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ce1947162---38030449785.pdfIn PDF document text
    • https://heuresromantiques.com/upload/files/suxesesageteniwanu.pdfIn PDF document text
    • http://dtpokebar.com/uploads/files/fupatib.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/36649310601.pdfIn PDF document text
    • http://thehonourride.com/clients/c/c2/c2a221447f3e921143a55eca482c8289/File/98222429043.pdfIn PDF document text
    • https://www.htlexpress.com/ckfinder/userfiles/files/39204967541.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/51164ab57331dcef1f4a4451cc82e0a2/76519447436.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b13d51df8a---63331468991.pdfIn PDF document text
    • http://broadmoor80.com/clients/866172/File/ropukotuve.pdfIn PDF document text
    • https://nenanhduong.vn/Upload/files/50163357539.pdfIn PDF document text
    • http://lawrence-spruill.com/clients/42275/File/91142150497.pdfIn PDF document text
    • http://yuha.be/_files/file/12400705530.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/gufizemap.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=definition+of+words+in+english+grammarPDF 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_off0000ee51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE51 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10663 19292 bytes
SHA-256: 889fd835eebcce78bcc68c50ade0029c6879c15a2fc115de9c7959346e91b475
font_02_sfnt_off0001379e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1379E 10888 bytes
SHA-256: bb8ac120a6ae6c0be946f99090537cfd0932202663a8f234bdab8436ff4ea0eb

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