Malicious PDF — malware analysis report

Static analysis result for SHA-256 9729253189173367…

MALICIOUS

PDF

102.6 KB Created: 2021-07-26 01:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 967e81eb052c4419ad4e907307e3ae2f SHA-1: 7e5dfd8c2877cb8d4909c4c73542a4ae2babc3fe SHA-256: 972925318917336702772a5ada59d38e897820f395c2491427f1cbfdfac00949
164 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating it likely contains a malicious payload. The document contains numerous links to external PDFs hosted on compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a download button lure further supports the phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://sewakendragroup.com/userfiles/file/46908712772.pdf
    • http://www.specemc.ru/upload/files/sojageworurugojitowevum.pdf
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/g34tsockeqjq4036rfatba2kg1/66511042833.pdf
    • https://martensmgt.com/business_school/uploads/file/latukonimozeta.pdf
    • http://heaig.org/editor/ckfinder/userfiles/files/69937490513.pdf
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160afad73c9685---17347046590.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac3a9176d7---tosukakugobudopawifukiku.pdf
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/fdf05552a315b769c2affde7860787dd/fululo.pdf
    • http://joltiy.ru/uploads/files/nilarurixuzu.pdf
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c68d9e156---17000868164.pdf
    • https://cafesca.mx/ckfinder/userfiles/files/jetirilad.pdf
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/22a6384f194decbcc2c7789e390bec18/gizonuvuvifiji.pdf
    • http://zae.me/datafiles/file/88436913320.pdf
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b99abdc2fc---56875437596.pdf
    • http://carrozzeriardue.it/userfiles/files/nutesazebebijilidag.pdf
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/qsa7p07681locaemjnh8bm0p7n/terevera.pdf
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/f91476186030404032e0ee6773503992/89144108802.pdf
    • http://jedwines.com/cmsCart//upload/file/palutasapixa.pdf
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/1cd72a064e734a37181d7de736e6db2a/wafonedatenisep.pdf
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/4aa2223b6ddd74a6afe2cace5321e753/pibixepofulara.pdf
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aca1ace420d---46785658088.pdf
    • https://trellisdundee.com/wp-content/plugins/super-forms/uploads/php/files/8f6b9b037142c0c086c3fa660744da8b/70185439504.pdf
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16080e4876031b---tisabuvinopogedinewowadiz.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=download+eminem+marshall+mathers+lp+free
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012408.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12408 16792 bytes
font_01_sfnt_off00013c1f.bin
c50993406af11f2466978580d456a25b09a97f372e989d1c8bf5a96f3a547440
pdf-font-stream PDF embedded font (sfnt) at offset 0x13C1F 10852 bytes
font_02_sfnt_off000154fc.bin
83ca211fe8b294eff01d88c7138342df182bf6823b385343cc3320ae22466ca7
pdf-font-stream PDF embedded font (sfnt) at offset 0x154FC 21124 bytes