Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e9dc81f8f09f99…

MALICIOUS

PDF

71.4 KB Created: 2021-08-02 09:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9798f9e32158caea71f01159ef71b5c0 SHA-1: 00e0aa8b2695a2a64f2f057822f44a1c08d6752a SHA-256: 60e9dc81f8f09f997677b73861d411c1f8adfc64d1c4434df267545dd5f423a2
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing lure, utilizing a screenshot to obscure clickable links. The presence of numerous external URIs, many hosted on compromised WordPress sites or disposable domains, strongly suggests an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a downloader or redirector for further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 71 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://inwebjor.ru/uplcv?utm_term=danzas+del+per%C3%BA+costa+sierra+y+selva+pdf PDF link annotation
    • http://retailcop.ca/files/memaf.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/16090af2a24e4a---melis.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/49ca86a02a77bd50b5f3b9c151043b3d/wolivevoxagabif.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/b6581250d4b3e7172992be547dc6120b/gixejipobuvosulis.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc3ea47574---tisipeko.pdfIn PDF document text
    • http://tuderprogettazione.it/userfiles/files/xamopotar.pdfIn PDF document text
    • http://pixel-pro.ru/upload/file/27995844746.pdfIn PDF document text
    • http://poltinik.ru/userfiles/file/91865418790.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf13fac795---13294467521.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16071eb3d7a07b---rakur.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/ndfadc08tsdfp4d1u7trlqnf2c/34397000518.pdfIn PDF document text
    • http://kaitosushisb.com/uploads/files/18874937519.pdfIn PDF document text
    • http://world-housing.jp/ckfinder/userfiles/files/5858016598.pdfIn PDF document text
    • http://www.netcorp.hu/data/editorfile/67476370606.pdfIn PDF document text
    • https://kominove-centrum.cz/media/files/file/58188956018.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/60260591897.pdfIn PDF document text
    • http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/uc0pciokoghmtskfqb1o52hgc0/47082200756.pdfIn PDF document text
    • http://phdpecs.hu/userfiles/files/pegapejidututevaxosopo.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbeeab70396---8879675078.pdfIn PDF document text
    • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/60129304702.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160901b2559019---lomutivuniguzatubi.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/c72e405c92a1bdc1fa142a8d75f4f1be/vamudejolefokesuvuf.pdfIn PDF document text
    • http://djpress.pl/Image/files/90838376954.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609df3ec00d86---9546352035.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/6k5k62b9fkl8bqp7hd73mm608v/84324665385.pdfIn PDF document text
    • http://flexa.cz/docs/file/gavedalu.pdfIn PDF document text
    • http://hilltopperalumni.com/clients/9/93/936f23dc4abb03f6d4a1aae2c8a32781/File/kijolidujebimaja.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_off0000b951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB951 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD168 10972 bytes
SHA-256: 803dd8e97b99019b06685a7f9b478a318c3c7d2881d0fd5c220532a65af21567
font_02_sfnt_off0000eb11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB11 13720 bytes
SHA-256: 1e8f8fe84cb492f6723aa027511bf312a65a4fe4c8a68b18615a4457649026fe

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