Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b7effe890b0b31…

MALICIOUS

PDF

93.4 KB Created: 2021-09-18 19:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 27be713b406535f2981929957b0aa0f5 SHA-1: 56523aac9e0a38325321c60179ae0acd10b3a2df SHA-256: 96b7effe890b0b314d29646112400a54fbf5e944aa69f29f18e66d35811d00ea
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

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://medvor.ru/uplcv?utm_term=the+office+online+putlocker PDF link annotation
    • http://xn--q20b13r9leepaeb.net/upload/file/202109100306258406.pdfIn PDF document text
    • https://rgcsmt.org/ckfinder/userfiles/files/zowakipoforuxebizuluzeko.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/22316648750.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/ximesutotamaponubewefamo.pdfIn PDF document text
    • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/bozotabofune.pdfIn PDF document text
    • http://inistor.com/ufiles/files/zakagasadisoxumovagepi.pdfIn PDF document text
    • https://zibarajabi.com/cache/fck_files/file/wisifutatebuzibutugi.pdfIn PDF document text
    • http://saigondome.com/uploads/userfiles/file/39778528683.pdfIn PDF document text
    • http://vattuxaydunghl.com/userfiles/file/kuwafenilanumujujiboripo.pdfIn PDF document text
    • http://lovepetclinics.com/file_media/file_image/file/94528821546.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/8oq5n0j5iu2tgpt6n2u6o652va/vebigozobotikumatejaxafo.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/sowodifujujajuxulusamojom.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1614615145b294---tevopebagajafewavegegi.pdfIn PDF document text
    • https://weekendtripskolkata.com/userfiles/file/pilarefadedikidewajodok.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cecf482daa---bibopewiremanu.pdfIn PDF document text
    • http://studiomarazzi.eu/userfiles/files/fevivukaxipizorutabo.pdfIn PDF document text
    • http://peetersinstallatietechniek.nl/upload/files/76896419188.pdfIn PDF document text
    • http://lemonsport.hu/upload/file/mojigerifis.pdfIn PDF document text
    • https://shinaltd.ru/images/file/pewebefodifita.pdfIn PDF document text
    • https://autotoner123.com/home/autotone/public_html/ckeditortest_WORKING/ckfinder/userfiles/files/budoguveki.pdfIn PDF document text
    • http://eatoceanic.iorderfoods.com/uploads/files/37666880807.pdfIn PDF document text
    • http://artattack-concerts.de/files/file/67355094299.pdfIn PDF document text
    • https://charming-dc.com/uploads/files/202109131315592134.pdfIn PDF document text
    • https://juniorclublivorno.com/sitonews/images_upload/files/dezadozatekixafe.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_off00010a60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A60 17764 bytes
SHA-256: e53bb4eb9266d6dd8ba0fcb1493c4df1d9687ea93290b49ac0e624b2584bc8fe
font_01_sfnt_off0001384f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1384F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15066 10404 bytes
SHA-256: 27adf2262f4cb97b426f6649dd76affb5558531f01791f5e8eed40d392c37db9

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