Malicious PDF — malware analysis report

Static analysis result for SHA-256 341848fd219ce27a…

MALICIOUS

PDF

78.8 KB Created: 2021-09-20 05:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 630a452529bc9df7c92fab7720704570 SHA-1: 89c36741560892b1f8f8f4366c19d9f323741182 SHA-256: 341848fd219ce27ad19fce678aab93ad4bfa789cbd579af5e4e59751d1f1978f
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which are part of a link farm hosted on disposable domains, suggesting a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass security scanners. While no scripts were directly extracted, the PDF structure and URL patterns are indicative of malicious intent, likely to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://oniceh.ru/uplcv?utm_term=zane+rewards+fortnite+account+generator PDF link annotation
    • http://hzzxtl.com/UploadFile/file/20210907120511040.pdfIn PDF document text
    • https://masukpt2.com/contents/files/kufusiridawimiv.pdfIn PDF document text
    • http://www.lasallelille.com/admin/ckfinder/userfiles/files/kivowarawifux.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/34791054608.pdfIn PDF document text
    • http://dentalclinicbangalore.com/uploads/79874975604.pdfIn PDF document text
    • http://kondicionery-noginsk.ru/upload_picture/file/kuwuj.pdfIn PDF document text
    • https://christianbelieversmatrimony.com/web/christiansbelieversmatrimony/photos/ckeditor/files/gozoti.pdfIn PDF document text
    • http://kor-ra.ru/UserFiles/file/lupobevilirotavixuso.pdfIn PDF document text
    • http://upnbkk.com/file_media/file_image/file/84232204817.pdfIn PDF document text
    • https://sistemagestiondpr.co/userfiles/file/raravune.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/lisariv.pdfIn PDF document text
    • https://ms2gacor.com/contents/files/94972294477.pdfIn PDF document text
    • https://pkmoscow.ru/ckfinder/userfiles/files/sajukotosetobirupufapiz.pdfIn PDF document text
    • http://nature-revive.org/files/file/lafusomakazex.pdfIn PDF document text
    • http://chaputlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/65244027502.pdfIn PDF document text
    • https://samsunyapi.com/userfiles/files/28355013291.pdfIn PDF document text
    • http://siblom.ru/files/upload/file/823559858.pdfIn PDF document text
    • http://kencert.vn/uploads/image/files/kilobiwufeguzewoxona.pdfIn PDF document text
    • http://maymaygiaydachidang.com/upload/files/24540977726.pdfIn PDF document text
    • https://pasarangroup1.com/contents/files/34773415032.pdfIn PDF document text
    • http://status.cz/UserFiles/File/47313752448.pdfIn PDF document text
    • 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_off0000ca9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9C 10752 bytes
SHA-256: 8e0b11359f98b7c4d4c5e2f44248021ee3e71755b5f8078b18bf164cf9ffa1f8
font_01_sfnt_off0000e365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE365 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fb77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB77 19196 bytes
SHA-256: 2c543a1c562b4788e8ded2e2ba5e930901eafbfc6974cbfaf4c176c16b83717d

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