Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea7bf1578b0cc1d…

MALICIOUS

PDF

79.7 KB Created: 2021-09-17 14:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 500f92834f996d5e1442603914627b8c SHA-1: e38ebd5ec60160f5cb1ef6af6a0b99abe9f27f9d SHA-256: eea7bf1578b0cc1dc438ba79bdba531012bfd93f8680425c40949698b38a5a45
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing multiple links to external websites, many of which are hosted on compromised or disposable domains. The heuristic 'SE_CALLBACK_LURE' suggests the document may be designed to trick users into calling a fraudulent number, consistent with phishing or tech-support scams. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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
  • 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.
  • 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://kfoodntea.com/dataroom/file/tixuladoxeki.pdf In PDF document text
    • http://greenglobepms.com/uploads/25988445936.pdfIn PDF document text
    • https://nbretail.com.vn/ckfinder/userfiles/files/panizurumexupupapezoparad.pdfIn PDF document text
    • http://helenhotel.vn/upload/files/gijuwimubuliwo.pdfIn PDF document text
    • https://doctmcooper.com/userfiles/files/xuvemajubodul.pdfIn PDF document text
    • http://huh.hu/UserFiles/File/xoseni.pdfIn PDF document text
    • https://cncunse.com/d/files/48162710180.pdfIn PDF document text
    • http://ilkconstruction.com/Images/Media/files/15391878160.pdfIn PDF document text
    • http://collectifff.be/imgdb/accueil/files/jisugipon.pdfIn PDF document text
    • http://elrey-uslugi.ru/media/file/gomimibesesuvalulikeduke.pdfIn PDF document text
    • https://petandpuppies.com/userfiles/file/68634683618.pdfIn PDF document text
    • http://indigobaby.eu/upload/files/rixovukuwudisetuben.pdfIn PDF document text
    • http://mitchelllawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/78335512814.pdfIn PDF document text
    • http://jjkxmy.com/upload/files/202109140251081922.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/c8fa1242a0b4aed552a4bd49bf0fe76a/44761203236.pdfIn PDF document text
    • http://hpworld.hu/data/pic/Image/file/88415169399.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613faa0dc3d36---sinenezabamozupavazazaf.pdfIn PDF document text
    • http://mrukseo.pl/userfiles/file/soxali.pdfIn PDF document text
    • https://intersensor.ro/v2011/Files/fck_upload/file/91248115.pdfIn PDF document text
    • https://dhins.com/testingsites/advantage_aviation/assets/media/file/77921569165.pdfIn PDF document text
    • http://adhdesign.de/userContent/files/20210917075418-fosububi.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/16142e994882cf---97404601315.pdfIn PDF document text
    • https://drlalashow.com/php/billboard/uploads/file/52574273845.pdfIn PDF document text
    • http://arenabilardo.com/data/_files/dadutogek.pdfIn PDF document text
    • http://transcash.com/ci/userfiles/files/logopobudizelagotadepota.pdfIn PDF document text
    • https://maria-galland.ru/files/file/41577792219.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=instagram+layout+apkPDF 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_off0000d285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD285 10628 bytes
SHA-256: 1de19400f75dd811e0c4b8de911a37a3ab7d1c3ed1b7f99abbd68ac63e2e35a6
font_01_sfnt_off0000ead9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD9 17808 bytes
SHA-256: f7eeedd4540e64fd8140e9e9c25c8b28d181a7d358dd8a5707d36c6415ef4fea
font_02_sfnt_off000118d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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