Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa776289bd8abbfc…

MALICIOUS

PDF

79.6 KB Created: 2021-08-28 15:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e9a74dd3d50377deb6a2bd8e58370b77 SHA-1: de5bdce99fb5da6e735d7cdbd9fa26433dc10f14 SHA-256: fa776289bd8abbfcad87181d5759e49909e99b35acf994b840483e3f620f3088
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous domains, many of which appear to be compromised or disposable hosting, suggesting an attempt to obscure the ultimate destination. The primary purpose appears to be redirecting users to external content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://sushiloverca.com/uploads/files/15709344156.pdf In PDF document text
    • http://younewstoday.com/task/userimages/file/84278939487.pdfIn PDF document text
    • http://leton.pl/userfiles/file/netirifikujokazimelin.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/juxibewukedepibeg.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/m7rgp9cq0mr2e2n7j6evunti73/gowuzub.pdfIn PDF document text
    • http://volamtuyetthe.com/userfiles/file/vudujamemupuwes.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/da7c070b646d836f414c1427e30dbde0/tosajojujojofi.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6572b93284---bisetora.pdfIn PDF document text
    • http://gulfcoolcontracting.com/uploads/userfiles/file/file/44100498051.pdfIn PDF document text
    • http://galeriejacqueselbaz.com/userfiles/file/nebakavipuf.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160736d9bb17e3---vifokovimamopazogafafa.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/zuxarofuxumamibo.pdfIn PDF document text
    • https://pasarantogel2.com/contents/files/50565543403.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b83e2e2b510---13332017030.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/vosojefiv.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/98244459731.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acbad828a8e---12414306646.pdfIn PDF document text
    • https://anfauglir.com/images/file/66008610416.pdfIn PDF document text
    • https://ngoctraithaibinhduong.com/uploads/news_file/dodejavanavulokoviwajo.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080eb726fe26---19553731933.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/92365891640.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/9b9b392b8fc2adc5e638677cdc25245e/nedizanogosiradorisi.pdfIn PDF document text
    • http://cesishotel.lv/res/wysiwyg/file/wulipikabom.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160a391682ca46---vazarafafawawi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=ai+learning+hide+and+seekPDF 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_off0000d5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D8 10384 bytes
SHA-256: db21507338d48fad9590b15f4c032dc3f55032753f4295b29fb0570f1631d3ed
font_01_sfnt_off0000ecf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF8 16828 bytes
SHA-256: e8e85bcf0bd4d6b83736b0f3ff405df796d55d4d12fea3312099af4dc863d32b
font_02_sfnt_off0001185b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1185B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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