Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c315e04f3d854c…

MALICIOUS

PDF

78.0 KB Created: 2021-09-23 17:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 97410ad8ea96054597ffe211011753b9 SHA-1: 30ad4a40de56d719c19a1a00be0428b4163c4d75 SHA-256: e1c315e04f3d854c932d19f6ade852daca4e6faee39634c922c7bfd2dfe28fed
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many of which point to potentially disposable hosting or link farms, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it is designed to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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 http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132abed10fb7---56106586836.pdf In PDF document text
    • https://bc2000.order-pro.com/ckfinder/userfiles/files/vipojexudeliguvalaxeme.pdfIn PDF document text
    • https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/palikodizevirovuler.pdfIn PDF document text
    • https://kaparatt.com/images/File/bomizulawopapojamavoxar.pdfIn PDF document text
    • http://topp.pl/_topp/file/zilowi.pdfIn PDF document text
    • http://123flower.doweb.kr/upload/files/nisufimugosavagoluzolok.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/f8169780ee9b8c96b77441d92d72cd0b/98815558934.pdfIn PDF document text
    • http://autothudo.vn/upload/fck/file/68686571884.pdfIn PDF document text
    • http://dija.lv/public/userfiles/file/latojagowakeg.pdfIn PDF document text
    • http://malabarisproducoes.com/arquivos/files/toxuwovasarobupapimagi.pdfIn PDF document text
    • https://digireg.ch/upload/gujivaril.pdfIn PDF document text
    • http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/45124174704.pdfIn PDF document text
    • http://rlmlaw.com/images/edit_images/file/3319369764.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/75864681648.pdfIn PDF document text
    • http://ijdssymposium.eu/upload/zuvudikositoduninomubos.pdfIn PDF document text
    • http://fitviewer.com/files/file/vazebediwukowopotaz.pdfIn PDF document text
    • https://renteci.com/imagens/file/rumodixamewavuzimuxu.pdfIn PDF document text
    • http://skkl.cn/filespath/files/20210902133109.pdfIn PDF document text
    • http://elitakhealing.com/ckfinder/userfiles/files/91954723256.pdfIn PDF document text
    • https://ikansambel.com/contents/files/34968007048.pdfIn PDF document text
    • https://chulintemple.org/CKEdit/upload/files/golumuzuref.pdfIn PDF document text
    • http://cosyromania.com/media/file/42495453576.pdfIn PDF document text
    • http://gemcom.org/userfiles/file/fegusuxamuwopulin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=the+big+short+torrentPDF 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_off0000c826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC826 10280 bytes
SHA-256: 661cb6c0fad9951045a1e4bc94a5e97b3bb788157a3bf483a5e9e308531b96ae
font_01_sfnt_off0000df3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF751 19040 bytes
SHA-256: a44cafc36c7864a871cfd187ed048c73e22c014777183e3f4645fbf5ff7b497c

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