Malicious PDF — malware analysis report

Static analysis result for SHA-256 1063180b1ff3a229…

MALICIOUS

PDF

86.1 KB Created: 2021-08-31 23:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2cd350e566312175465f00b2e1422722 SHA-1: 04382e34cd6a998adb7a12cf3cff63a4fef4dff9 SHA-256: 1063180b1ff3a22964497fab277756ef8ec994b9a03d271463870ec6e3d473ee
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable domains. These links likely serve as lures for phishing attacks or to distribute further malware. No scripts were extracted from this sample, but the structure and URL patterns are indicative of a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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://medvor.ru/uplcv?utm_term=internal+cover+letter+examples+promotion PDF link annotation
    • https://bhavanarayanaswamy.org/userfiles/file/16019522.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/3ttr1ifr2r5irhpm71947o964m/zegonusanizuvezajanid.pdfIn PDF document text
    • http://takeacode.eu/user/d41d8cd98f00b204e9800998ecf8427e/file/famox.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/1ce174ecef484b91e9f944b1421fbf00/sutatekopadaro.pdfIn PDF document text
    • http://ccspatti.org/userfiles/file/90370544759.pdfIn PDF document text
    • https://cordovajewelry.com/images/file/69118084314.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/91afe63a83fbbddfc6767caf17c73e9c/xezizudadup.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/9059531cc5e68164f545b976b2f75212/teworobuvawo.pdfIn PDF document text
    • https://hsiaoying.com/userfiles/file/dituridutujatoworonoliw.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cfa80b2f754---dagekileniv.pdfIn PDF document text
    • http://drive4smilesontario.ca/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/xotumavavumusofuzan.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/3dc394047f9675620da439c30d33fbac/49224060315.pdfIn PDF document text
    • http://sherwoodchambergolf.org/ckfinder/userfiles/files/kirivuvotov.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160a17b1ccc0c2---vovusugerupoteb.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/bigamesejosirek.pdfIn PDF document text
    • http://pc-driver.ru/userfiles/files/vopevelosefarixusume.pdfIn PDF document text
    • http://facilitymanagementassociates.com/survey/userfiles/files/fifip.pdfIn PDF document text
    • http://swaminarayangm.org/userfiles/file/bekupuxo.pdfIn PDF document text
    • https://udruga-invalida.hr/files/41077377897.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/5934ee56162b7766f360e17dc7be0a3f/53986818091.pdfIn PDF document text
    • http://andrewclaymonfishing.com/clients/a/a7/a7b0d980ee28df7184f998a87a00dbd5/File/79228345376.pdfIn PDF document text
    • http://live-lessons.net/lcj/web/uploads/assets/file/40570018530.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/94843719889.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9724aff8b---90136787376.pdfIn PDF document text
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/7a22e5993fa36b87e0e7535f7e5e026b/nogeganuxopijagemo.pdfIn PDF document text
    • https://goacetours.com/ckfinder/userfiles/files/12401981665.pdfIn PDF document text
    • http://gialtour.it/themes/userfiles//files/51269060978.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC6 18200 bytes
SHA-256: f65d77c3822b24d81f99573388f297425e2fb49d1504fc316d433099f0a17fcc
font_01_sfnt_off0001197d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13194 10652 bytes
SHA-256: bcebcbafda19e1a7170d4911a699429345e9abf4b9b90808cf88c45a5bd9d5a0

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