Malicious PDF — malware analysis report

Static analysis result for SHA-256 d051a27c082a30bb…

MALICIOUS

PDF

72.8 KB Created: 2021-09-05 08:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: aecee9e119f563745d88ffa284f6b26c SHA-1: 1170a9e4d92d7ff19f07451a7918c2b22ec78c7f SHA-256: d051a27c082a30bb58a4fb6de2f452e7a9215b5509e28cc488bb089e986c92cb
184 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple external URIs, many pointing to compromised WordPress upload storage, suggesting it's designed to exploit vulnerabilities or deliver a malicious payload. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is a pretext for a scam, likely aiming to trick the user into calling a fraudulent support number. ClamAV detection and ML classification confirm its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 https://sportsht.com/userfiles/file/bofudege.pdf In PDF document text
    • http://texmet.pl/userimages/file/watuxijusenorepogij.pdfIn PDF document text
    • http://xecuoihuyhoang.com/uploads/userfiles/file/83684354381.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/ts25obh7eis89p0kkdcq88o3q6/jubuwovavekijisuvopoxefez.pdfIn PDF document text
    • http://lexxyin.net/files/fckeditor/file/77379206736.pdfIn PDF document text
    • https://chambredhotes-savoie.com/ckfinder/userfiles/files/32876974189.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/e981818812c62eb289082fba08a8dc8a/76465908231.pdfIn PDF document text
    • https://attackworkoutprogram.com/app/webroot/files/ckfinder/userfiles/files/sajunupojedixiterefedak.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/sc98ah1p267u7u875l1aooug30/46222776123.pdfIn PDF document text
    • http://drentmedischadvies.nl/uploads/files/zukut.pdfIn PDF document text
    • https://www.wizzfizz.com.au/application/third_party/ckfinder/userfiles/files/vebuxozofowinizokonazoguw.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/8bckbjtmbgtm4mdtu4ut78io1a/vemukopuze.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/fa7091c7f55f77c9bea3f7839d1c1d04/60732176329.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0c1619eca---93912482962.pdfIn PDF document text
    • https://lescourailleurs.com/upload/editor/file/warurepuzefevodajazubava.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e63e43847---fonafanunuzozegunatafo.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609882aa07489---6470474451.pdfIn PDF document text
    • http://ukkies.be/userfiles/file/ruxevem.pdfIn PDF document text
    • http://mundori.com/js/ckfinder/userfiles/files/feworunopezefaj.pdfIn PDF document text
    • http://pecsimutargygaleria.hu/files/file/bagutaxitomikit.pdfIn PDF document text
    • http://zoltysnieg.pl/pliki_wyswig/files/wugimajutuzaxa.pdfIn PDF document text
    • http://myredm.ru/uploads/file/xugelev.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0231d11cc1---50712354463.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086b87db11e2---35256864950.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=circular+motion+ap+physics+worksheetPDF 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_off0000be01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE01 14792 bytes
SHA-256: 6b7a3074d0dd74254d52e44bbeb91314b573ae88b3bf98873387142fef6d6dfc
font_01_sfnt_off0000e370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE370 11064 bytes
SHA-256: c291cf534c4e4951594fdf7175ff45752be83cc8218c6c50c5b6e625b27b7bc3
font_02_sfnt_off0000fd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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