Malicious PDF — malware analysis report

Static analysis result for SHA-256 269bdf74854bde8d…

MALICIOUS

PDF

76.2 KB Created: 2021-10-14 01:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b4365ad2d09907b35273234980dc298f SHA-1: e41d4c995679405cf6aae1535ed7699d81c6f2a6 SHA-256: 269bdf74854bde8d9ef447d4abdb22702dd52f34b8ce0130168560e8cd9930da
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The ML classifier also strongly indicated maliciousness. The file contains numerous embedded URLs, many of which point to suspicious domains and are structured to appear as downloadable PDF files, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inprovitvenezuela.com/ckfinder/userfiles/files/segojexup.pdf In PDF document text
    • http://theofficefurniturestore.com/ckfinder/userfiles/files/70022262253.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/torafov.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/ruvaposerelakuf.pdfIn PDF document text
    • http://archive-2013.humandoc.pl/attachments/file/faletebibegozoto.pdfIn PDF document text
    • http://ekhoron21.mn/uploads/files/18156035680.pdfIn PDF document text
    • http://www.electricman.in/demo/frontend/web/uploads/files/44792633614.pdfIn PDF document text
    • http://veszpremlizards.hu/_user/file/91560046620.pdfIn PDF document text
    • https://abbma.in/admin/uploads/file/dezaz.pdfIn PDF document text
    • http://ingegneriarossi.it/userfiles/files/82093575248.pdfIn PDF document text
    • http://zhongyuemedia.com/filespath/files/20210925170701.pdfIn PDF document text
    • https://technoarc.net/userfiles/file/puvupuved.pdfIn PDF document text
    • http://righetti-ticozzi.it/userfiles/files/52611591740.pdfIn PDF document text
    • https://tylbm.com/Upload/ckeditor/files/lemawijanikijixazab.pdfIn PDF document text
    • https://mtydizayn.com/userfiles/file/38416413651.pdfIn PDF document text
    • http://lex.tj/img/file/12546196141.pdfIn PDF document text
    • https://xebecdesign.com/xebec/userfiles/file/jeledabinisiwolig.pdfIn PDF document text
    • http://waxiangyuan.com/upload_fck/file/2021-9-3/20210903013627412720.pdfIn PDF document text
    • https://mbzgogo.xyz/web/img/podborky/files/jogonugenajevolon.pdfIn PDF document text
    • https://girl0229960192.com/upload/users/files/fajederotikepafim.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1616356ef7881f---3739972623.pdfIn PDF document text
    • https://madeirashopping.com/userfiles/file/suwawapaxerevujomapadapan.pdfIn PDF document text
    • https://dhins.com/testingsites/advantage_aviation/assets/media/file/zalobapanaku.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/tgwjJlsMqHc/uplcv?utm_term=create+your+own+country+government+project+examplesPDF 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_off0000c1eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1EB 17816 bytes
SHA-256: 5f17017518b30e085ae0a44eb7d1e4d8abec3885893d1b581cc39c03f455d7ba
font_01_sfnt_off0000effc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10813 11252 bytes
SHA-256: e083e0912416bbd48ad0ce1baff182b95f597d5381a5053aa6bf376bec7beffd

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