Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d6a774ba1ac3e3…

MALICIOUS

PDF

79.4 KB Created: 2021-09-09 02:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: e4c0f264334ee2cf65786317eee82134 SHA-1: 155f5bda1f264d8554ff6c2c14b7a10755751700 SHA-256: 94d6a774ba1ac3e3a4c096e0346847207e9a418c806611b4af4ca1908616d7ad
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm used for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with phishing lures and malware droppers.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/jivivukegojarumufali.pdf In PDF document text
    • http://lehnerkom.de/images/uploaded/file/bagivab.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/74696408438.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612fee5b774c3---febakako.pdfIn PDF document text
    • http://mama-care.com/UserFiles/file/pogezuvipevirun.pdfIn PDF document text
    • http://baiduvpn.com/upload/files/dabikiwazoj.pdfIn PDF document text
    • http://www.hebrewforreadingcomprehension.com/content/vubojezegaxiwapatub.pdfIn PDF document text
    • https://tsegypt.com/file/jasikose.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/161346ae173750---posojinagolomuxubatavax.pdfIn PDF document text
    • https://marcvandewiele.com/userfiles/file/3841319153.pdfIn PDF document text
    • http://wsm.hk/images/uploadfiles/file/xekawoluk.pdfIn PDF document text
    • https://sindicav.com.br/ckeditor/ckfinder/userfiles/files/mavapig.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134d084e8055---kekel.pdfIn PDF document text
    • https://estduquebec.com/scripts/php/xenocode/lib/ckfinder/userfiles/files/dasokub.pdfIn PDF document text
    • https://gulf-rope.com/images/bulk_images/files/raviwurufatinana.pdfIn PDF document text
    • https://tebra.si/userfiles/file/kibejubakifukobubigeseva.pdfIn PDF document text
    • http://meta-min.com/files/10852496667.pdfIn PDF document text
    • https://nasikampung.info/contents/files/gipowejonubisimoniparor.pdfIn PDF document text
    • http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/72145331247.pdfIn PDF document text
    • https://adrfarysz.pl/userfiles/file/61627455395.pdfIn PDF document text
    • https://alaqart.atelierleuthold.ch/userfiles/files/16141591617.pdfIn PDF document text
    • https://www.pactforfamilies.org/ckfinder/userfiles/files/82500089009.pdfIn PDF document text
    • https://khambenhxahoi115.com/images/files/parerovemamebisaduronu.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/79314090718.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=our+constitution+subhash+kashyap+pdf+free+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC15 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE427 18716 bytes
SHA-256: 62417af43d1f69b7091cc49467072f768d23e93bb231e58dfa36ccfa3ee2826a
font_02_sfnt_off00011550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11550 11276 bytes
SHA-256: e4e6a8d86068f23e09fa6b2b3166f7f748d12ce116c5c9006804882ed3c01f2a

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