Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e231142951c8c5c…

MALICIOUS

PDF

86.0 KB Created: 2021-07-14 01:17:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 2ef5fede2400c90f29841dd089c4aa90 SHA-1: 85738e1c479b794fa1ca40262e27d800baad8d85 SHA-256: 9e231142951c8c5c6ccd5d16f1e42212eea9fded30d82b8ce435cbfe52311673
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The file is a PDF document flagged by ClamAV as a phishing trojan. Heuristics indicate it functions as a link farm on compromised CMS uploads and contains a callback phishing lure, prompting users to call a number for fake issues. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the overall pattern suggests a phishing attempt designed to elicit a phone call for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ac274611b---lewenogipijegamizajowota.pdf In PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607e83afd18fc---puzetipojivugod.pdfIn PDF document text
    • https://akanaymatbaa.com/calisma2/files/uploads/bivufek.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/mf7pbhnmjndoie38aj9brslvsf/xobusulu.pdfIn PDF document text
    • http://teraval.cz/res/file/tasuworazozexunajirutowo.pdfIn PDF document text
    • http://mt-filtration.com/uploaded/file/210975760560da0e9650c52.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/mifofidizevovozixaxenojep.pdfIn PDF document text
    • https://riolospettacoli.it/filesUploads/file/70299430711.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/dupomimadu.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/6a93262ba2e881dd0c504e780f0f002c/53637477330.pdfIn PDF document text
    • https://jambukuning.com/contents//files/botodu.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/pewuwag.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ded590ec3---1218007783.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/jexiteku.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160803606befef---bufezozopedawinekasupo.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160e67fbbc01fc---niwaduvibutelepipedura.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/hpq8gq0jp5n01e8cefver1b3u0/38428375151.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/941e5ec6cd43c1feb6517e09744bae50/37358900986.pdfIn PDF document text
    • http://mastervgtour.by/var/upload/file/98616988601.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae8af43f85---dakebuzilabovo.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/gae14svgpv7hn3se9f3h5qrab5/87947407111.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/941da126273c3f8818ab03eec3e915a8/mumofefigowunilegije.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/dglnec2q66u6al0b2lr7hld5v6/92589010038.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=is+north+capitalizedPDF 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_off0000ed5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5B 10620 bytes
SHA-256: 94295362315a2f7038aaab2559324fc734be1f730ba73dcd79150d3872fcb05a
font_01_sfnt_off00010591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10591 17724 bytes
SHA-256: fcaf8f16c6a29a0fb48733e7110e1427e34095cb64b47d471cd1f25e1058c26a
font_02_sfnt_off00013303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13303 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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