Malicious PDF — malware analysis report

Static analysis result for SHA-256 07965267940b023d…

MALICIOUS

PDF

82.3 KB Created: 2021-09-10 17:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 4e80f6995845ddde464ab143fbffd801 SHA-1: d925e7cf44f9ad3a4d7bd57d860f091f91083932 SHA-256: 07965267940b023db02d3a7e24b9458471c9c4cbeb1a0ce08da2b68126bf2cd2
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and a link farm pointing to multiple domains, some of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using such domains for hosting files, suggesting a lure to download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://charontrade.hu/data/file/62574935021.pdf In PDF document text
    • http://veganogle.es/uploads/ckfinder/files/xitefupewi.pdfIn PDF document text
    • http://wernersuarez.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/83839704502.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/dk96vuh60j8dpqdchq5nh2msm1/pobotevena.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/33277201372.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139413356a7c---tumiwidokedubotibejiforod.pdfIn PDF document text
    • https://tractorpulling-emmeloord.nl/upload/file/bubaj.pdfIn PDF document text
    • http://yuanhebiotech.com/upload/files/taradinagogapude.pdfIn PDF document text
    • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/sisagotok.pdfIn PDF document text
    • https://peisheng.org/uploads/ckfiles/files/61324e9b3e36a.pdfIn PDF document text
    • https://www.bankkartya.hu/js/ckfinder/userfiles/files/52493558086.pdfIn PDF document text
    • https://mattress-leader.com/media/nidesuf.pdfIn PDF document text
    • http://autostyle-japan.com/js/upload/files/39400462646.pdfIn PDF document text
    • https://goldgreiner.de/userfiles/file/25239410188.pdfIn PDF document text
    • http://kiuruvedenlukio.fi/tiedostot/file/sipobexarakafuti.pdfIn PDF document text
    • https://otoform.com/upload/ckfinder/files/laxijeduxopusumixusumif.pdfIn PDF document text
    • https://guineaservicesproviders.com/gsp/files/gasamujibuzejisanu.pdfIn PDF document text
    • http://geometrabottero.it/userfiles/files/gifatikipu.pdfIn PDF document text
    • http://ourdesign.hk/ckfinder/userfiles/files/35362662830.pdfIn PDF document text
    • http://basketaci.cz/UserFiles/File/80625614377.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1ead4d0fa---gusogofaz.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/664ceb708bec5b05383b2893463ebc68/7634993018.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16139640873683---84113569022.pdfIn PDF document text
    • http://mtjjt.com/2013/upload/article/files/210909102450681515zsyya.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/uailt9nk15lskh7uo2de7he9ph/numigivuge.pdfIn PDF document text
    • https://wita.lt/images/files/gamekilowuduvezasoke.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=dialer+vault+app+downloadPDF 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_off0000dd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD62 10472 bytes
SHA-256: fc7e93a959b65249cf074fcc6dae85e89216a91fdaa1807b343a09ca11d6acd0
font_01_sfnt_off0000f541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF541 17756 bytes
SHA-256: bac0d6d9fc28f3a9ef80d1c60675424e58e6207dba750690c9320b331f1577b8
font_02_sfnt_off0001230c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1230C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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