Malicious PDF — malware analysis report

Static analysis result for SHA-256 480541bbce1a8ef6…

MALICIOUS

PDF

78.9 KB Created: 2021-09-18 01:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e80f49d07d388b99573242ca4c487fe1 SHA-1: 5d07d725b79980bc631a5330ef64fcf01f50d2ea SHA-256: 480541bbce1a8ef6a63971145d6593f54c87cc4f11ecb4c316b555d1992d944b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to disposable domains, which is characteristic of phishing or malware distribution campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://quangcaowebsitecomvn.xemlaco.com/uploads/files/tigisapawofifabined.pdf In PDF document text
    • http://www.naturhalles.fr/fckeditor/userfiles/file/94042773982.pdfIn PDF document text
    • http://myphamvickwhitebeck.vn/luutru/files/87098659139.pdfIn PDF document text
    • http://uslugi-ogrodnicze.pl/pliki/File/vunigivuxodonirewumokakim.pdfIn PDF document text
    • http://www.39koratmachinery.com/file_upload/files/3648382047.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16131db0947f87---46243147153.pdfIn PDF document text
    • http://american-security-inc.com/assets/ckfinder/userfiles/files/67300670317.pdfIn PDF document text
    • http://abwhopewell.com/uploads/files/57282623602.pdfIn PDF document text
    • https://denizlihorozu.com/resimler/files/wuworebosesumi.pdfIn PDF document text
    • http://another-partner.morefriendship.com/upload/files/muvipubibulepiw.pdfIn PDF document text
    • http://kapalishakti.com/ckfinder/userfiles/files/81967518817.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/jidixazezesekexexuke.pdfIn PDF document text
    • http://zeshengtecphar.com/UploadFiles/FCKeditor/20210912102743.pdfIn PDF document text
    • https://xn--hjrnskadeakademien-mtb.se/userfiles/file/18107665239.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents/files/69719828925.pdfIn PDF document text
    • https://clubkdo.fr/img/pics/files/gefubafakejanebuwenuw.pdfIn PDF document text
    • https://avflash.nl/upload/files/satavororozuxutowi.pdfIn PDF document text
    • https://doina.md/fckeditorfiles/file/8403749877.pdfIn PDF document text
    • http://rogersdesignhouse.com/uploads/files/72003653478.pdfIn PDF document text
    • https://rubfila.in/files/file/zobodunadakuligosowifaker.pdfIn PDF document text
    • http://moscreen.in/cmsfiles/file/97593780726.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=how+to+install+a+obb+filePDF 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_off0000cfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e7b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B2 18084 bytes
SHA-256: 8720ad2f9bc19c985b2375df378fd848856c98308485ae9f5e0a7503eade10d0
font_02_sfnt_off0001165b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1165B 10324 bytes
SHA-256: 30c48079002ca4e46ebeaee40c6d9cbc09895f83989de1717280981c1590d93e

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