Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b3e10f8396d270…

MALICIOUS

PDF

83.1 KB Created: 2021-09-07 16:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b79f56ae5095958d3a9e4862d36f9488 SHA-1: 8fc95d14c48d7d318c684ae77f9afb8ef28c91ae SHA-256: 69b3e10f8396d27068c3cec11590d50410bfca5cf35932fa3833ae440d00627e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics indicate it functions as a link farm, pointing to multiple compromised or disposable hosting sites, likely to distribute malware or conduct phishing. Although no scripts were extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/838ada1e6d60f3ed6048661d5c67e0de/37835873171.pdf In PDF document text
    • http://globalcenterhotels.com/bot/ckfinder/uf/files/nitalajuwuto.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/6amh1n2665n752br7feb026bf0/14062740886.pdfIn PDF document text
    • https://questyme.com/userfiles/file/20061010864.pdfIn PDF document text
    • https://okazdedziecko.pl/_files/Media/file/vusiwusoradapogigimop.pdfIn PDF document text
    • http://architettotamborra.eu/userfiles/files/40360573331.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/1525413e73a2db18101fbfbeabeee1aa/89458795315.pdfIn PDF document text
    • https://etimes.mn/uploads/files/tubuv.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/voliva.pdfIn PDF document text
    • https://quizai.com/uploads/files/29705269235.pdfIn PDF document text
    • https://dm288.com/slicice/file/kifosor.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/36196925081.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/zifapozujowekavofudo.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c4b4bc81a7b---64197224458.pdfIn PDF document text
    • http://www.hausbaumesse.at/ckfinder/userfiles/files/94712674321.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/ivslelb5qjkii3spihc66s6oem/xumenedipibux.pdfIn PDF document text
    • https://greenvalleykerala.com/ckfinder/userfiles/files/seruregunabefibagiwaref.pdfIn PDF document text
    • https://burgas-remonti.com/userfiles/file/padezilusifalorulegaruzob.pdfIn PDF document text
    • https://yarpaket.ru/userfiles/file/lodasupivupezesiji.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/ninulategonopavesigedug.pdfIn PDF document text
    • https://aymexco.eu/ckfinder/userfiles/files/8264688282.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/da7o6dojk27p8ndhlo63fr42tt/xadefebigoperoga.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/0028ea261e5475eb731074596af99f4c/kanomemotagudusu.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/logemonovived.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/futapar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=fusionner+pdf+gratuit+windows+10PDF 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_off0000dd1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1A 18588 bytes
SHA-256: 103979a05ca2ec1b3fe2bee0f75fa706188b7791ecb81c8edd9f38b785aaefd5
font_01_sfnt_off00010d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D84 10964 bytes
SHA-256: 9ae81872d3e42b0cc222138e1c3ad0642176642c78e2f93b651e999af420aead
font_02_sfnt_off000126f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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