Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d452ed2ac251de…

MALICIOUS

PDF

518.7 KB Created: 2021-06-25 14:32:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dbb4a9145f0671924b39cdf2d48aa44b SHA-1: 402e8f50fc10f2fac96ed9d1967c536d5d1547ce SHA-256: 14d452ed2ac251dea704257b313b480f083f9f83ef149b687ca19af43d6dc534
166 Risk Score

Malware Insights

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

The file is a PDF identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains multiple links pointing to compromised WordPress sites, suggesting an attempt to distribute further malicious content or host phishing pages. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous links to potentially compromised upload directories indicates a distribution mechanism for malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8864

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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 http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a6353eb88c3---tepotidotos.pdf
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609253fe8f829---xumovejikilox.pdf
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608099b29a564---30087020987.pdf
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607760c130c23---85644020016.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a07af5eb487---fexativoguxek.pdf
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdf75116b7---newodadikulabunefobo.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/3b9f8728ca71e78cceca2c2368751144/risixozirilonun.pdf
    • https://powermailer.in/userfiles/file/47754578342.pdf
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/70212227960acf2a96ae1c.pdf
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1606c908bc9c08---30680391684.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160910177e7c83---60768127003.pdf
    • http://www.celso.org/download/kokisewopimomeki.pdf
    • http://thuephotocopytaihanoi.com/upload/files/37294567226.pdf
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7d8ce9055---rubemozomewo.pdf
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/2d790ca19868cb1b02698c977a83d73c/zevetexosipezujulasodi.pdf
    • https://apoiotelecom.com/imagens/img_fckeditor/file/girebuwulazuze.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=the+night+train+at+deoli+and+other+stories+pdf+download
    • 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_off0007ad18.bin
9ada475ad0666a5c8539ecbf4c3bb4289c65214fd6365aed6346ac1852018422		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD18 17364 bytes
font_01_sfnt_off0007da3f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA3F 16792 bytes
font_02_sfnt_off0007f256.bin
a511a6294196232a0951b8956c451d070371dbe97e5d0b226efbb6f21fb337b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F256 10828 bytes

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