Malicious PDF — malware analysis report

Static analysis result for SHA-256 929ac21cbf25c7e3…

MALICIOUS

PDF

89.1 KB Created: 2021-09-20 18:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d83a09076b2a79ebd639e90fc5badd29 SHA-1: 0c438470f636fed0a69bfef723b4ca999cf39051 SHA-256: 929ac21cbf25c7e37e756fe4d2397d29e816574f1476e7e7a49f1fb83c8aec0b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous embedded URLs that point to various domains, many of which are hosted on compromised CMS uploads or disposable hosting. These links likely lead to phishing or malware distribution sites, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://angelsolutions.ro/ckeditor/ckfinder/userfiles/files/vozetuluxib.pdf In PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146fda59bdf9---77258849527.pdfIn PDF document text
    • https://serrechevalier-skifun.com/imagesfile/83303408863.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e3800aff1---38197509875.pdfIn PDF document text
    • https://nocenzura.space/web/img/podborky/files/nomufuvepo.pdfIn PDF document text
    • https://ww150006.linebot.net/upfile/files/20210917200454.pdfIn PDF document text
    • https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/lituz.pdfIn PDF document text
    • https://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/24714042774.pdfIn PDF document text
    • https://buildingexpertsdirectory.com/ckfinder/userfiles/files/xamidugisuvenuzo.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/fagevidifadugitipu.pdfIn PDF document text
    • https://hv2barrier.com/application/third_party/ckfinder/userfiles/files/welenubabevematetibokexi.pdfIn PDF document text
    • https://dhesient.com/media/32382268863.pdfIn PDF document text
    • https://newcar-rental.com/uploads/files/202109010652309828.pdfIn PDF document text
    • http://topup-fight.com/ckfinder/userfiles/files/40283210117.pdfIn PDF document text
    • http://dorp.pl/userfiles/files/tibififumotazavolibolix.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/71bf6d9a44092dc49725c8d12ac7e384/66960717488.pdfIn PDF document text
    • http://nessium.net/userfiles/file/84290582985.pdfIn PDF document text
    • http://veterinariomauracotti.it/userfiles/files/nonepefidulotugina.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/rujusizufilog.pdfIn PDF document text
    • http://mathrainbow.com/userfiles/file/76186814578.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/18ec5f3588713741734b667f3f665536/28071140317.pdfIn PDF document text
    • https://ddtoyz.com/ckfinder/userfiles/files/4132873296.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=the+panti+sisters+free+watch+full+movie+onlinePDF 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_off0000f82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 10960 bytes
SHA-256: 9f24839271a2a0db7fa3374804874321f26768a8fbe920bb36ac61c4a5dd499d
font_01_sfnt_off00011180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11180 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12992 17520 bytes
SHA-256: e38127445933aae81cabc63813f26a4a77c5134f6d3563f104b2325c1b7bc426

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