Malicious PDF — malware analysis report

Static analysis result for SHA-256 489dd6d85d0013a8…

MALICIOUS

PDF

85.5 KB Created: 2021-09-03 18:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 262f72c4cb50ee49a7759384d65b2724 SHA-1: 3c5a3c916b37df91ef5cb09ae778366ffba2b6cd SHA-256: 489dd6d85d0013a864d4c11881aa64bcab650d703db5492c5285fba48c9563d9
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous domains, many of which are associated with compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 http://worldofpacifiers.com/editor_uploads/system/files/lapavuzifuxijem.pdf In PDF document text
    • http://writtenmail.com/upload_images/file/kuxow.pdfIn PDF document text
    • https://ivanamihic.com//files/wupinipof.pdfIn PDF document text
    • https://balajitutorial.com/admin/userfiles/file/semovowomoxojudax.pdfIn PDF document text
    • https://menu2uplus.com/images/file/ziferoxebokesif.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/153721039ce5fe3b1eb34408add4625e/62381160600.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609c48e41f40c---dalulawi.pdfIn PDF document text
    • http://kruengrangthai.com/files/files/13348306572.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/14i2rlimqd7nee7m1mn5ukc0u0/fogevaza.pdfIn PDF document text
    • http://myphamhelios.vn/luutru/files/52826066940.pdfIn PDF document text
    • http://sibaco.ru/ckfinder/userfiles/files/25294014033.pdfIn PDF document text
    • http://dentistturkey.com/image/files/wusajuninuraragopone.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b58917026---bufajurilaxavodota.pdfIn PDF document text
    • http://draftingfloorplan.com/ckfinder/userfiles/files/pasujetotikokususa.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/i420p7o4ghqot8ab90r94aebrq/31585788219.pdfIn PDF document text
    • http://www.chubsorn.com/file/files/bojovivirugejizup.pdfIn PDF document text
    • http://lamelove-zakryti.cz/userfiles/file/lewivod.pdfIn PDF document text
    • http://happy-travel089.com/CKEdit/upload/files/95657342894.pdfIn PDF document text
    • https://et-auditing.com/userfiles/files/9611701133.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095f0f880f56---minefanatilolozita.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609510615a6f7---51225982832.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/52a79de91193c817ca48bceb120cd843/kironax.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/7budgvnk6ujsqgph9npg58fp3v/rapuzode.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/0e52f6638e9af430c8fcdb9164649513/barol.pdfIn PDF document text
    • https://honda-otolongan.com/upload/files/kizunemoj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=sap+hybris+commerce+pdfPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDE 16180 bytes
SHA-256: c0217721a1102ad1f8a8ff5461faadb02f26a3634bfe128d67f68b25b112ee8f
font_01_sfnt_off0000e183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE183 21244 bytes
SHA-256: 68cdc907142b0d1d5fe800ab7ba86589e2343ac813731a8781ba464502cec958
font_02_sfnt_off0001167b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1167B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E92 10964 bytes
SHA-256: 726f3dee957df49b6bfd7778297d0b11ba238d846b69f8fcab3c1175648fa31d

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