Malicious PDF — malware analysis report

Static analysis result for SHA-256 9295a6ca299b9037…

MALICIOUS

PDF

200.0 KB Created: 2021-07-20 11:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 334eb1c38568a5999c06f7078767dc18 SHA-1: b5b1c03a2542796c478f8cc53e3e4f2cd7bea619 SHA-256: 9295a6ca299b90372856fb9ea073c7a9de9f88f2619b17e51e2442f237fced2f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links, with at least one pointing to a compromised WordPress upload directory, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 5

  • 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.
  • 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://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/1c8a595c0cd93f2f3343640c2d2692fb/31704988911.pdf In PDF document text
    • https://mariellatriolo.it/public/file/wuwisubejitalelivagoruj.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/ce3b1180e6afb9394555e4afce8419ef/47907358265.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160de8a321404a---xisafizonu.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096104e8280b---togax.pdfIn PDF document text
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/vrtuur15p3tpcil66thutgcgpr/11493572412.pdfIn PDF document text
    • http://doktor-okonski.pl/uploadimg/file/paripamusomomiw.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160f2a5e9a13f5---wunaguvugewudidugovu.pdfIn PDF document text
    • http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/160821030a5bf7---26720281728.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/16094681e4bf21---23906207791.pdfIn PDF document text
    • https://kuni.ro/app/webroot/files/userfiles/files/33358029651.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080619976cec---gatufimozaxedugutusepuk.pdfIn PDF document text
    • http://asiavent.com/UserFiles/file///kumifewovi.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608638680140c---topoxuxosokubi.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ebbbc8b13---seveg.pdfIn PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16078df37d588a---tixalapolomobidijiwow.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a37b84022f4---29786316648.pdfIn PDF document text
    • http://seoulmenu.com/uploads/files/90110282003.pdfIn PDF document text
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/39335651310.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160864e3c3aa1b---neparanodakitabowoz.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/026671e849c4ec00cbf47314180fcfab/1296263535.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073756bbdb22---rovixelagugoturavuvurupub.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c0da53b2c---18120087375.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=4+pics+1+word+level+308+answerPDF 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://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_off0002b293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B293 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002caaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAAA 11096 bytes
SHA-256: d21716d7736ddbb9885d5bd761e1f92af4aa7cedd58f4e068f357c28b68234cb
font_02_sfnt_off0002e4bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4BC 19188 bytes
SHA-256: e36d58d2d613f6e24ab06d43cccab8828350ce1991ef879ea70994e5c836f48b