Malicious PDF — malware analysis report

Static analysis result for SHA-256 0299bb52492787dd…

MALICIOUS

PDF

79.0 KB Created: 2021-09-09 16:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0d7a5c35c7afd596a5c8d259b0b1adf7 SHA-1: 7d12e2a50fe9db04a948b6d911fb9f01bfbcf3fd SHA-256: 0299bb52492787dd11d40b49f472de3291829c2abf02e6f757fb520cffc28eba
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to potentially compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://beaszemin.com/files/88086642282.pdf In PDF document text
    • http://youandisagenix.com/ckfinder/userfiles/files/soxuf.pdfIn PDF document text
    • http://marketypik.pl/zdjecia/fck/file/23336324842.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613528683bced---kuzomenojovebu.pdfIn PDF document text
    • http://fuzoku-kyujin.jp/ckfinder/userfiles/files/fazovixixidotidaruvu.pdfIn PDF document text
    • https://bompentax.com/quangbasanpham/app/webroot/upload/image/files/divabonenoxasewo.pdfIn PDF document text
    • http://architettobotteonpierpaolostudioabacus.it/userfiles/files/43191702891.pdfIn PDF document text
    • http://retrolondontees.com/userfiles/file/sanuxevepelifumosi.pdfIn PDF document text
    • http://flexinform.com/hirlevel/file/lemidagebegaset.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/tptcmed4i0hipgtja0e2argci4/64233155667.pdfIn PDF document text
    • http://pxmonastery.org/CKEdit/upload/files/87470539483.pdfIn PDF document text
    • http://www.haztartasigepszakuzlet.hu/pics/file/19570302779.pdfIn PDF document text
    • https://abzesolar.com/uploads/files/44262019335.pdfIn PDF document text
    • https://thingstodobahrain.net/ckfinder/userfiles/files/tegevalideforomoxodalexud.pdfIn PDF document text
    • http://1carl.com/userfiles/file/jakovoxa.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/53182126427.pdfIn PDF document text
    • http://elcwma.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mezepolotajenod.pdfIn PDF document text
    • http://leaders-adv.net/userfiles/file/sulovoboxojawin.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/n95296mug3lfaaevp0mstmd0m6/20043366654.pdfIn PDF document text
    • http://www.sas.edu.mn/ckfinder/userfiles/files/sarabuni.pdfIn PDF document text
    • http://oawebserver.com/piceditor/file/lotofu.pdfIn PDF document text
    • http://historico.uts.edu.co/portal/app/ckfinder/userfiles/files/43149005434.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/16132289ed1c06---70621273462.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=reel+story+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_off0000d32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32A 10396 bytes
SHA-256: 67b9cb609cac5e97ae7d8be2844ae0e2fb9e11909782394477eac46953da7c65
font_01_sfnt_off0000eaf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10304 16936 bytes
SHA-256: 163502733a6f14cf85d06674b23e35d9d5bc2786d13f906f852aef5970a6b445

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