Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df0ba198fd40174…

MALICIOUS

PDF

93.5 KB Created: 2021-09-15 02:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a8b6a1408881b963f5313918480a3614 SHA-1: 3ad6f65b6d385ab39f262b6b73035d6f21727d1b SHA-256: 0df0ba198fd401748bc9bf8dedae63a841b4b3b81ad1a0198b910af39b0d23d5
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various compromised websites and disposable hosting, likely to facilitate the download of a secondary payload. The presence of a 'download' button lure and the use of compromised CMS uploads further support its role as a malicious downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://infrive.ru/uplcv?utm_term=pokemon+mega+evolution+game+download+for+android PDF link annotation
    • https://sedefartphotography.com/resimler/files/83549201457.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1613fccaf22a8d---68621559278.pdfIn PDF document text
    • http://koreabulk.net/userData/board/file/89019469881.pdfIn PDF document text
    • https://lideregitimpaketleri.com/calisma2/files/uploads/tafat.pdfIn PDF document text
    • http://polyacer-ecp.com/userfiles/files/20210905_232002.pdfIn PDF document text
    • http://ihdbd.org/upload/files/23250003207.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1614040e575829---nibabixed.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/26oo1k7m00qujvbgoipmkd7vg3s45pjm/1171432363.pdfIn PDF document text
    • http://crabandclaw.com/uploads/files/56696207877.pdfIn PDF document text
    • http://patanamachine.com/imgUpload/files/73189411016.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/c34068f5b5e515bd9f80b26b3dfe49c6/8284435707.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/rgd1dvf81se3dj2h3kr62a7bt6/resimar.pdfIn PDF document text
    • http://cauthangdep24h.com/upload/files/77919213501.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141299fa1b78---gufagijafinusekod.pdfIn PDF document text
    • http://auburn-companies.com/userfiles/files/bipazipabeteget.pdfIn PDF document text
    • https://chulintemple.house-well.com/CKEdit/upload/files/59027208972.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/9c6cd48674b7cf27f04a892ad256911d/kutomidevukuxatir.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613546471530f---93255177896.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/biduxelaper.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/fevezu.pdfIn PDF document text
    • https://yingzhaoliuart.com/upload/file/vurivowopivudunuvodujogep.pdfIn PDF document text
    • https://kimcert.net/E/file/53683569422.pdfIn PDF document text
    • http://irollee.com/userfiles/file/bejavenujutotuzodiw.pdfIn PDF document text
    • https://livre-art.com/ckfinder/userfiles/files/18534469418.pdfIn PDF document text
    • https://ijieet.org/ckfinder/userfiles/files/bexubawurejotaluf.pdfIn PDF document text
    • https://quangcaowebsite.xemlaco.com/uploads/files/67145958097.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_off00010708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10708 18492 bytes
SHA-256: 4a5d5c9d55ffa1960cae63a3f98fd97bc5f4cebce532a25024eed605bb7a840a
font_01_sfnt_off000136cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EE4 10872 bytes
SHA-256: c24ad210588f923f489dc277ab805dc177e1886452219ca40f8d02c862f19aac

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