Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea05405c8e14bfee…

MALICIOUS

PDF

87.0 KB Created: 2021-06-29 00:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3332f38de22efc456fa37ba5d08f378d SHA-1: ab4bf8a07323cc9dfa3fdfe81e78365410ac3153 SHA-256: ea05405c8e14bfee1411456d957108f6d49ec38a21f9cda286c6c20107418c98
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm pointing to multiple compromised WordPress sites, likely intended to lure users into downloading further malicious content or visiting phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the structure suggests a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://bagiez.com/userfiles/file/fenesamebuniwezegu.pdf
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/lntvd095v4duq49hom25ltcq7l/viduvagativafuwa.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/ie46e950a1b1toab4l03et9nkg/pabutozaz.pdf
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a3818aed8b7---vizixupiwozupelitotijik.pdf
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16089d50d63972---57505203999.pdf
    • http://www.dismaplant.com/ckfinder/userfiles/files/54084168849.pdf
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/2qoehniuorp773tqfbjb2mtd9o/32819503662.pdf
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/0b8b8d663a215c70339c5fa53879f7a2/67448264689.pdf
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/2437c45c9a6f8551d76f93dfd275cab6/54147410084.pdf
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/ttlm1g9d00nvrb8frq6osa89va/43980740907.pdf
    • http://droprint.my/home/ququ4923/public_html/userfiles/file/vipixotitegewovoboboju.pdf
    • http://katachizu.com/img/news/files/kureretilisofi.pdf
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/ckl18a29n98p2rkokq7betpghc/waguradeduzekoper.pdf
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16094c2c399506---30404343484.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/e828ffa04a6d981f10833a936bb2434c/kujimaxojijazo.pdf
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/6e7j6cig6f0ncl64hcuph07l8o/46904364323.pdf
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aed5c3b4caf---vunife.pdf
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/709270fd047a052b8a33bdf2e5f52f1c/ralekimumivokabug.pdf
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160847b1599248---63538726733.pdf
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608a12913626b---pewomere.pdf
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160da404138f80---29955191916.pdf
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/83bf672a9f3e76a19c5fbd43d4d8def8/nafepanalafofuwitel.pdf
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec8f8149c6---25380649055.pdf
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/9cb6b4cbe0e96fb0468941bc7dca8359/38652609612.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=delusions+without+hallucinations
    • 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_off0000f22f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 16792 bytes
font_01_sfnt_off00010a46.bin
1e35335fc0c00f054e20948a37589b866d57219f9b3d8b78ecdb8bdfaec078df
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A46 10412 bytes
font_02_sfnt_off000121e4.bin
d25b428f8c20a7d034a07e6bd9735b14ab7bd5588e40220d4affe1d9ca3865f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x121E4 17156 bytes