Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d04933a60874a9e…

MALICIOUS

PDF

85.0 KB Created: 2021-09-21 23:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f1c066b9bfe2f207eacad9889c54f54d SHA-1: 954a7e6160304b42a5cab32523de1654c7949424 SHA-256: 4d04933a60874a9ef63837e4cbe3cd949104a26d0cba15b62bf397e8bb04382f
164 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple links to external files, some hosted on compromised CMS platforms, suggests a phishing or malware distribution attempt. The 'Download Button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://theatresaucinema.fr/uploads/file/21037322600.pdf In PDF document text
    • http://konberdbio.com/upload/files/lefopuzotudojazawa.pdfIn PDF document text
    • http://lamarchesainterita.be/lamarchesainterita/imgdb/news/files/kubegil.pdfIn PDF document text
    • http://hastensandbreakfast.nl/userfiles/file/vubevaseluradusujo.pdfIn PDF document text
    • http://nhagiatxanh.com/public/default/ckeditor/files/xanuvatebonijutizewupig.pdfIn PDF document text
    • https://stcc-sa.com/motakamel/Ups/files/89858326381.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613e0fc37d5bb---timunivevus.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/83719827569.pdfIn PDF document text
    • https://sukienmiennam.com/userupload/files/fawadopunomararepukesote.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/16982639208.pdfIn PDF document text
    • http://graphicyazd.com/ckfinder/userfiles/files/9395962548.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16149478380b0c---zowefupusajiwukisuvometul.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/7dbef6e7680a9df4e7cc534068133990/85365501919.pdfIn PDF document text
    • http://tlumacz-lipno.pl/pdrzewiecki/files/20890997632.pdfIn PDF document text
    • https://ltes.tw-goods.com/UserFiles/files/rowivez.pdfIn PDF document text
    • https://robustbrakes.com/administrator/imagetemp/file/75465909629.pdfIn PDF document text
    • http://a-b-i-s.net/layout/bilder/file/54549802951.pdfIn PDF document text
    • http://sreema.org/FCKeditor/file/37014544030.pdfIn PDF document text
    • https://kolegium.inaheart.org/upload/files/24139076308.pdfIn PDF document text
    • http://wedooverseas.com/userfiles/file/rokewix.pdfIn PDF document text
    • https://hongdung.vn/ckeditor/images/files/piziw.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/43d605d8618c217d3740bcaa9a1de95b/kesaridabanisevukaxob.pdfIn PDF document text
    • http://vincitydata.com/uploads/ckfinder/files/36730524936.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=twins+mission+full+movie+mp4+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_off0000e727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE727 17920 bytes
SHA-256: cafed41b88bb6e508179c4c8b3673985045854fce2dea823185823908c94a038
font_01_sfnt_off00011562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11562 10756 bytes
SHA-256: 3d4446fb287e05220cf019619ff80a0b4fcdd44b4469c82bf870ebbe9cc1edfa
font_02_sfnt_off00012e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E34 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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