Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80e9cac0befa1fd…

MALICIOUS

PDF

76.9 KB Created: 2021-09-02 03:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: eab55d7d2b816d0a08ec7073a264abd1 SHA-1: 15539d39736105d959e7f8406e722f3d13c8132d SHA-256: f80e9cac0befa1fdb85841b921f527d4c259d5c554c1c6265162697358d8456a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. No scripts were extracted, but the PDF structure and URL patterns indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 6

  • 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.
  • 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://tonere.shop/app/webroot/files/userfiles/files/gilokigivosol.pdf In PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ef25925ce5---33483524749.pdfIn PDF document text
    • http://zatacorp.com/upload/files/43355461376.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/1fdc959386bcc2bad08df64acf6b240c/17171226317.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/xofogarivafuwakoke.pdfIn PDF document text
    • http://hodgesmageefamilyreunion.com/clients/c/c9/c95619ca3ec29dd030dc8935b97378d4/File/dajeki.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cef451ed2d---17747265246.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/fb158127d2cb6f3baa054839504b34d8/womebajewagimev.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d107143ad---filiwivu.pdfIn PDF document text
    • https://www.latentoac.com/portal/wp-content/plugins/super-forms/uploads/php/files/ak6bm0m1v7667kqd1iu5aaafnt/rovamo.pdfIn PDF document text
    • http://theemasternetworker.com/ckfinder/userfiles/files/runuzekamojovefos.pdfIn PDF document text
    • https://netiko.ge/img/Data/file/11533130575.pdfIn PDF document text
    • http://iccjsc.com/images/uploads/files/72281667049.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607860d8570e5---mifukutuzazik.pdfIn PDF document text
    • http://portalkucharski.pl/app/webroot/media/files/51186585791.pdfIn PDF document text
    • http://nitexprofi.cz/userfiles/file/92466995613.pdfIn PDF document text
    • http://pitchdecor-construction.com/user_img/files/14418753154.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/16076068416f68---luvofupugejenigo.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/168452043260dbf949b95c6.pdfIn PDF document text
    • http://barahi.com/assets/userfiles/files/fidiju.pdfIn PDF document text
    • http://flexicourse.cz/res/file/piguvov.pdfIn PDF document text
    • https://mszukam.pl/dat//file/68349586467.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a573fd9b154---jovajorazewubute.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=notorious+in+tagalogPDF 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_off0000c891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC891 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A8 10228 bytes
SHA-256: 4cb3230a420728f0caf306b3ea5575d07c91b1d23e223e08b59d95c2fb9c431a
font_02_sfnt_off0000f7bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BD 17688 bytes
SHA-256: accf7cb41c857704e7606719f852d4c22f9aa2340be529e52685f3b108cc2eec

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