Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc77c644b4eb303…

MALICIOUS

PDF

73.7 KB Created: 2021-09-08 22:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 2988b999644b16a2287da35f647a54cc SHA-1: 1068f5392a75d4c6aa0a013fcb60d527a608bf04 SHA-256: 9cc77c644b4eb303e73d7fc329d0c8cb85e314e77e69c349e6820567cbe6a2b1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics indicate it functions as a link farm on disposable hosting, with numerous embedded URLs pointing to potentially malicious content. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://myparrotfood.com/user_files/files/38494149196.pdf In PDF document text
    • http://lungshingcentre.com/userfiles/61072598268.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/3913c24c3b885b7457801306da68bd26/tuvobugerixumukadoropiw.pdfIn PDF document text
    • http://orel-trinity.ru/sites/default/files/file/49101492605.pdfIn PDF document text
    • http://sweet-sugar.de/images/uploadedimages/file/lunexosuwovapivu.pdfIn PDF document text
    • http://gowowdeli.com/uploads/files/kikodujilubidaguduvuw.pdfIn PDF document text
    • https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/18425473184.pdfIn PDF document text
    • https://bunian-co.com/other_files/File/68091936679.pdfIn PDF document text
    • https://linhngapt.vn/upload/files/71661972126.pdfIn PDF document text
    • http://nppgursaraijhansi.in/ckfinder/userfiles/files/rabip.pdfIn PDF document text
    • http://tns-china.cn/editor_upload_image/file/35511139256.pdfIn PDF document text
    • http://veterky.ru/ckfinder/userfiles/files/zujumosuguvenapafiro.pdfIn PDF document text
    • http://mobiliteit.nu/files/limowemolavisidakumafad.pdfIn PDF document text
    • http://infas.cz/images/wiswig/file/92935867609.pdfIn PDF document text
    • https://istanajp2.com/contents/files/wejidofujuvajajere.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612eade697e78---23017113391.pdfIn PDF document text
    • http://ottomaniantextile.com/userfiles/file/42773535071.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/ic5qgtm8d86vkch5m7h8lbmv24/63881640022.pdfIn PDF document text
    • http://xn--aknmedcal-wpbe.com/uploads/file/92329517918.pdfIn PDF document text
    • https://balbok.net/admin/ckfinder/userfiles/files/kasizezawego.pdfIn PDF document text
    • http://jlssj.com/qianzi/upfile/case_editor/file/23659991615.pdfIn PDF document text
    • https://rumahbaruku.com/contents/files/xebogox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=block+calls+on+androidPDF 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_off0000bfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA3 10276 bytes
SHA-256: 43a2678d70736fba1a0b78bba9fe5b4117eae5a6c47c1c05a6bf3861db23a9d0
font_01_sfnt_off0000d6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D4 16632 bytes
SHA-256: 600617aa260528804e57515e42a35a0033382bc7abacf557eaa642dedcedbd63
font_02_sfnt_off000101a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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