Malicious PDF — malware analysis report

Static analysis result for SHA-256 df359db50e33b1e8…

MALICIOUS

PDF

83.6 KB Created: 2021-07-20 19:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e6dc15619c2e0affe06b0b0a4113560b SHA-1: b2cfc8b228c2b0df82641fe78cc6fdc66faf442a SHA-256: df359db50e33b1e8c7eff257eab3620b2428c8331d22df0368a4323c33c3b794
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Static analysis revealed that the PDF contains a link farm pointing to numerous distinct hosts, many of which appear to be compromised WordPress sites. This suggests the document is designed to lure users into clicking these links, potentially leading to phishing pages or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc7c726971---90319218020.pdf
    • http://omonetach.pl/foto/ilustracje/file/99297869389.pdf
    • http://pvvc.cz/files/gobipilemusuwoluganivor.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff2ac03cf5---63254883647.pdf
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee2af800ee---kafofojolobuxanexozuvitu.pdf
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/ecbc17e61f497df9a1af7561698055c5/45265157868.pdf
    • https://baxsporthorses.com/userfiles/file/wegijubolerinizop.pdf
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/2lm5vgun95jl6d6c3t16vfol3i/zemaxux.pdf
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/irdn5pvnh0jfs4llej5klmib3h/jojedezoguxijulivo.pdf
    • http://expertcomptablecourreges.fr/michel_courreges/userfiles/file/nuwufusiw.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086051f9b70c---88968828704.pdf
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/298c358260c87fc806b53e1f1906bc2d/garazader.pdf
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f64cb1ccfa---17712176305.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077ff96dc737---wikubofadututipujofo.pdf
    • https://mt-creativestudio.com/ckfinder/userfiles/files/dewumonokejikexumi.pdf
    • https://dienlanhhonganh.com/images/pic/file/50732243711.pdf
    • http://nirmalamathachurch.org/cms_uploads/image/file/giposalokigazuvagu.pdf
    • https://poolpoint.be/uploads/file/99588144419.pdf
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/a2097afcc9c8d0cac524831d051b822e/21177401450.pdf
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607f05040cb75---gesegorepuxiwevugotiniwav.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/c7fd308c7277026c1390d80de2caf990/41944837687.pdf
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f28192ec3b---95301811962.pdf
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a1bc9ea92cb---merowoguxelevesuse.pdf
    • http://cuatro-pr.org/sites/default/files/file/retedunavizibezokirib.pdf
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/9fb54240f889dee8fac10f38d746348c/23043654839.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=cocos+hair+and+beauty
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e28e.bin
2443a9b8ae2a80efe74199e872bc3445eb699cd1dd23c9d4fed05834b42175f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE28E 17492 bytes
font_01_sfnt_off00011031.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11031 16792 bytes
font_02_sfnt_off00012848.bin
6c02d343da1383a49d691773b3e56cf5379a159e5cf4357529db7c573fcecbb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12848 10804 bytes

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