Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ae1eb4741f03d98…

MALICIOUS

PDF

90.5 KB Created: 2021-07-30 01:19:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 287a16d59dd0927ed67eadfc33abf90f SHA-1: af6b146b1bdc1639e29856712ea02fafe48d8bd7 SHA-256: 6ae1eb4741f03d98a1200cf0f608b6806bf3a8ddec8a4a73b9d6af659dd9445b
156 Risk Score

Malware Insights

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

The PDF document contains a large number of links, many of which point to compromised websites or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of numerous external URIs and link farms points towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://apvn.info/userfiles/file/nulofejewafinewowe.pdf In PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16082a3ab87bd6---5553597967.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4525f4ecac---53113409134.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609a73aa405d0---80699779400.pdfIn PDF document text
    • http://rotang.net/userfiles/file/15413934428.pdfIn PDF document text
    • http://www.retorika-zidar.si/ckfinder/ckeditor_uploaded_files/files/sakituluzejemupe.pdfIn PDF document text
    • http://alptw.com/images/files/25458652678.pdfIn PDF document text
    • http://oticonshop.net/ckfinder/userfiles/files/kuwiwe.pdfIn PDF document text
    • http://musikpark-live.de/userfiles/file/lizuzam.pdfIn PDF document text
    • http://educationexplosion.com/clients/a/aa/aae59ec6301d25964842a0067e0ae100/File/81415731254.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f289b3b35---37063973000.pdfIn PDF document text
    • http://hungthanhauto.com/luutru/files/41907409246.pdfIn PDF document text
    • https://menu2uplus.com/images/file/xuwujagalomovuvexa.pdfIn PDF document text
    • https://harkakotony.hu/UserFiles/file/93066187975.pdfIn PDF document text
    • http://bioscipublisher.com/files/upfiles/file/juwovajogigutezazavajetid.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/3ntlupacc334vm4f0vn1fcah65/72610509851.pdfIn PDF document text
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16071b6a964e86---32260328303.pdfIn PDF document text
    • http://umffz21.ru/admin/ckfinder/userfiles/files/zivobufekopusazolawapuwut.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6df587906---wuvixivez.pdfIn PDF document text
    • https://www.comperat-89.fr/ckfinder/userfiles/files/loworusazivevavalalewawul.pdfIn PDF document text
    • http://bwlpsalisbury.com/uploads/files/detozopojeragiropugulibo.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9cc2e7c396---mezamozinegodizebipipugi.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/ecglh753h8c92tltuihpfv86tk/879030679.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609495ad61fc4---zuzurekix.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+can+i+check+my+covid+19+test+result+online+in+assamPDF 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_off0000fd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4B 17060 bytes
SHA-256: 2f41252397781e3782611647d5534226f632c457b16044bb33c4c7fbb984ebdf
font_01_sfnt_off00012955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12955 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001416c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1416C 11304 bytes
SHA-256: 85ff3e35340b0f9ff350bca75cc5c22852212aad82b7edd04955dcc891f4838c

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