Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f7a13e16231034…

MALICIOUS

PDF

79.4 KB Created: 2021-09-20 14:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3edea3abc486fed6a1ed8772a57e377a SHA-1: e7348b93f2895d211524444f745ec1d73ce17d62 SHA-256: 06f7a13e16231034cee2f9e76fcd2ace01edcad626fd6fdc13a0dbb48844cb8a
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are associated with link farms and potentially compromised content management systems. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The document's structure and URL patterns suggest it's designed to trick users into clicking through to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://irlanc.ru/uplcv?utm_term=mcpe+monster+mod+apk PDF link annotation
    • https://discovery99.com/userfiles/file/wozufomowuvitobapizimag.pdfIn PDF document text
    • http://studiochiodo.eu/userfiles/files/lemotagudolabiserolip.pdfIn PDF document text
    • http://artdental.hu/editor_up/9697296842.pdfIn PDF document text
    • http://xsjsbzrw.com/uploads/files/93998699407.pdfIn PDF document text
    • http://sandlnae.com/data/editor/file/20814223742.pdfIn PDF document text
    • http://pasted-radio.de/web/files/19626727678.pdfIn PDF document text
    • http://gutachterbewertung.de/userfiles/file/68439224995.pdfIn PDF document text
    • http://creationart.hu/files/file/13880265957.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/dibubupuwiwekowotixirope.pdfIn PDF document text
    • http://5m-tti.com/uploads/image/files/rozugofujexosakuvu.pdfIn PDF document text
    • http://etkindenetim.com/resimler/files/84443565939.pdfIn PDF document text
    • http://sbsinternationalschool.org/userfiles/file/92381455469.pdfIn PDF document text
    • http://orenprom.com/img/account/file/xirilokonulenajuzobabani.pdfIn PDF document text
    • https://nezrenpin.com/calisma2/files/uploads/2977602182.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161360d8b63bc9---rupevuginixegisa.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/fbt5vn9h8s6rs7bmr9h87kmi6d/35620658127.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613216003996a---nokin.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f37f86095c---30160791686.pdfIn PDF document text
    • http://stilna-ya.com/_userfiles/file/forekovogujekixafovixesej.pdfIn PDF document text
    • https://wisestudentz.com/userfiles/file/padiduzedupelezizo.pdfIn PDF document text
    • http://mu-rrrc.com/userfiles/file/gegaz.pdfIn PDF document text
    • https://libyamonitor.com/sites/all/libraries/ckfinder/userfiles/files/18791165186.pdfIn PDF document text
    • https://pmrmhss.com/userfiles/file/40974997242.pdfIn PDF document text
    • http://nayyaralidada.com/alpha/ckfinder/userfiles/files/jewaderagike.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_off0000d261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD261 10620 bytes
SHA-256: e894a4a04580606335afdf1752c674f69d36b7ccccfe1a6a9853436b95cdc897
font_01_sfnt_off0000eaaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000102c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C1 17516 bytes
SHA-256: 49e36d1fea3e6ebe4ed03959eff2470164c412b6126c9d5820757d308f231b2a

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