Malicious PDF — malware analysis report

Static analysis result for SHA-256 b101198da6e90a14…

MALICIOUS

PDF

93.8 KB Created: 2021-09-17 20:58:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ce822e07a4ada314eed011488a741088 SHA-1: 8ae91d17cf818d06ba74640372962877732efb3f SHA-256: b101198da6e90a14f8b28c3147aef34d0f8b4dc2096269ada86565dd0b2b9b78
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The primary purpose appears to be directing users to external URLs, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://pistant.ru/uplcv?utm_term=the+age+of+surveillance+capitalism+pdf+download PDF link annotation
    • https://sunnyrosesschool.com/userfiles/file/57089587652.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/50051865961327b27ef444.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/ce9bff56710c1d0d5d9ce628623a6d9a/zemapaluwawekesajo.pdfIn PDF document text
    • http://rszm88.com/upfolder/e/files/20210916212654.pdfIn PDF document text
    • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/2a616bc38c55268436ad60f3e63ca6d4/54938700677.pdfIn PDF document text
    • https://mimpisiluman.com/contents/files/lekakupenanises.pdfIn PDF document text
    • http://hmsendo.pl/uploads/editor/file/57113383534.pdfIn PDF document text
    • http://emanuelarombiarchitetto.eu/userfiles/files/38488994585.pdfIn PDF document text
    • http://nuovartea.eu/userfiles/files/sotewi.pdfIn PDF document text
    • https://ngonluathan.vn/images/ckeditor/files/dulup.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/93136745704.pdfIn PDF document text
    • http://gayaarchi.com/userfiles/file/20210902160652.pdfIn PDF document text
    • http://gzhangqin.com/uploadfile/files/fowitatofepujoruruloga.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144444f684ed---30879592375.pdfIn PDF document text
    • https://cdmsig1.com/ckfinder/userfiles/files/mamurorenukuxigo.pdfIn PDF document text
    • http://pharmabiosolutions.com/filespath/files/20210909165503.pdfIn PDF document text
    • http://lhdrum.com/User_File/UpFile/file/20210913111618_NzMxMjgwMTMxODI=.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/lexikunupisavakam.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/ae625d59217b53f39c8f17dfe4e4c3b5/sobumigipipezopox.pdfIn PDF document text
    • http://razaviota.ir/basefile/razaviotair/files/puvoximorivi.pdfIn PDF document text
    • http://travellerisland.com/files/69856708832.pdfIn PDF document text
    • http://ozkayalarlojistik.com/userfiles/file/desevovu.pdfIn PDF document text
    • http://labradory.pl/file/mesexuroba.pdfIn PDF document text
    • http://dlabiura.kbo.pl/ckfinder/userfiles/files/kixuboxukawexaravuguwe.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_off000102da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DA 11284 bytes
SHA-256: d83bae9b8677f856c69ae6a206a4b9e46155e451d9ce5d76b6b1915bf3aa55e7
font_01_sfnt_off00011d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D07 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13519 19780 bytes
SHA-256: 76c7bc8b948de75024309dc49645b3212409293ba6faea8cadd550d4f4a618a4

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