Malicious PDF — malware analysis report

Static analysis result for SHA-256 7409fc4daaef5d55…

MALICIOUS

PDF

93.7 KB Created: 2021-07-01 19:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: dcf46cfeb9ff17482badc03afce18d4c SHA-1: f0e6880555dd4eaba94335bba6330d7ef6a76ace SHA-256: 7409fc4daaef5d557fbb59cb9ad892c55c68680018255b16c3bd9d120691f8e8
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous links to compromised websites and a deceptive download button, suggesting it is designed to trick users into downloading further malicious content. The presence of multiple external URIs and link farms points towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c823260b24---30220960879.pdf In PDF document text
    • http://motorlustor.net/userfiles/file/bodoxegojipunifufogibile.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/c26780b7ab3b49b7d69994fe7c9612a5/xuvurisebofevirobune.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160aabdf512648---52047660271.pdfIn PDF document text
    • http://uralinteh.com/uploads/files/2459905430.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/74f12edb308ec37e557240ea684165cc/63168403004.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/47659962235.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/23630083643.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/dum0gjn5p1bj3trgakt5em58fo/46497959960.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/81578541042.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160cbde1620ef5---69575158290.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/e0crutsmq2at5cdn408qov1bve/bopivuburelumavabukiripi.pdfIn PDF document text
    • https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076713e1be4f---19864056008.pdfIn PDF document text
    • http://apexhealthnutrition.com/newerac2c/userfiles/file/67355785987.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/bafekomirukiwa.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc192ac6c8---68351573616.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/6268c3d95bdcd8bfe2f7a75d44bdd988/gulovinede.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/lanakax.pdfIn PDF document text
    • http://alptw.com/images/files/98291505729.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160756ee94c48a---ziliri.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/5669f105c30daf401cf46739f12528be/lanoj.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160db0ce8a97b4---48525560152.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/44da2b3c192b7e789ebb2908efb79f84/mumigixemeledu.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/bopuvetexelatowurulo.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160711c8a8fd87---tuwizisa.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a96b8a020---14476935315.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=the+power+of+consistency+pdf+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_off00010ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD5 10880 bytes
SHA-256: b008ea0c7850500bd48aa85e73fde123fc53717c9dcb2b587165760ed22a2771
font_01_sfnt_off00012405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12405 17732 bytes
SHA-256: 95095b028118469f7beb601b8823d434a53cfac4699526d0539152551d3ee0fe
font_02_sfnt_off0001516f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1516F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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