Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7bd2d8e8e04726…

MALICIOUS

PDF

81.1 KB Created: 2021-07-06 14:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: e6f71307e23be83d4c8eee4e8a7ec16a SHA-1: 8bc6267e06b14ddf211d55c59a5b909f4750503c SHA-256: ff7bd2d8e8e047265db006ae8401e09b9b3949343da66c37d2e7caf55de0cb59
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites. These URLs are likely intended to redirect users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the nature of the embedded URLs suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://wastran.ru/uplcv?utm_term=the+mystery+of+the+pantomime+cat+pdf PDF link annotation
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e263a8495d---94365588445.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/dolabadidijezelove.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/c4065e024b08289ac46d46fb524afbd1/bufapafipotadetozapig.pdfIn PDF document text
    • http://chi-kara.net/userfiles/file/gonawusafufasiwimalunuj.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce0d5a026a---36012306083.pdfIn PDF document text
    • https://jurad.eu/files/file/vukebizomo.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d792d282a8045145d2df39d7d57bea96/53807860791.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/dasisizimanipunutofegosas.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/9851158632.pdfIn PDF document text
    • http://lnshiyue.com/userfiles/file/20210606104331_731229031.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16089db8b72e03---worudixexologobi.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/2tt1ogepnbamqu7q76b28857ps/37907692007.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/xuzoxilesafamorefomakotaj.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/1877178a472c90cfca5a04e02c7aa666/42150505652.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/gb46cqvgsoq9gin4n28ha026s4/wubozubatomogape.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/1c8298d4194becd217e2949ba4a6611a/moxenajazipit.pdfIn PDF document text
    • http://alompar.hu/uploads/content_files/files/43934231000.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/fbd290d7ace36569cf7a2c37ce0f24e9/78797210533.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/1607930536a1a0---76122423702.pdfIn PDF document text
    • http://vencedor.coop/images/admin/file/wonemisotof.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c043755e8fe---43915472955.pdfIn PDF document text
    • http://doks-films.com/pcms/content/file/48922287436.pdfIn PDF document text
    • http://alessandrobelleseveterinario.eu/userfiles/files/40813719232.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_off0000d94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94D 10916 bytes
SHA-256: 79192eec25b8701632940a68eb3087e73431312bf55693cfdb8dbbdaee1144f5
font_01_sfnt_off0000f26d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26D 16988 bytes
SHA-256: d436496a047d2453d95a02391001f9ee4eece2f7de54ca82526854b32c52e02d
font_02_sfnt_off00011f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F15 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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