Malicious PDF — malware analysis report

Static analysis result for SHA-256 97bb34e79b17098d…

MALICIOUS

PDF

197.3 KB Created: 2021-06-27 02:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7c748820e2042fad7acdf719f6455cdd SHA-1: ba9fb4aa54b644274421796313b13493020451d1 SHA-256: 97bb34e79b17098d9edac6015c8127e4c23672fa1afae24d5134a388a4472594
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The document contains multiple links pointing to compromised WordPress sites and other domains, likely serving as a lure to download further malicious content or phish for credentials. The presence of external URI findings and a compromised CMS upload link farm strongly suggests the document is part of a campaign to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9620

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://garglob.ru/uplcv?utm_term=doggy+style+music
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/c677af82af5cb7c0200bb34487535f34/vudokukafebiridigakede.pdf
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/s7e53q929nf0i91rg2tdbssajr/lovewigabap.pdf
    • https://sp-pir.ru/wp-content/plugins/super-forms/uploads/php/files/8b539df9780f79bbb9b0fb6c9de84fab/60908244215.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160b74e3fda4e6---bonivegibem.pdf
    • http://actybrain-consult.com/Upload/files/68952470816.pdf
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/64kdslq4qdjqq6oj05qddsnteg/6105365404.pdf
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2eb01a6757---pudolagum.pdf
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/0178c48c80ef004a82a4c8b43f83ebd7/4257225840.pdf
    • https://loctra.net/userfiles/file/55869458257.pdf
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084afcc33ef1---57476256273.pdf
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13877bb33f---25536225818.pdf
    • http://tz5168.com/uploadfile/image/2021/05/16/file/20210516_033152_105.pdf
    • http://aqbnb.com/uploadfile/file/vijuno.pdf
    • http://a9188.com/upload_files/art_files/files/20210623_010313.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a38a3d453f---68205100179.pdf
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/3fc41fddc6d94a3aaa946be2404e156d/wiwulotokibupuwoli.pdf
    • http://aklond.com/UploadFilesfile///2021060309465961.pdf
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/b108bf4a1dfea10c4c5f7fe32e9005a1/80596993983.pdf
    • http://andlupa.com/userfiles/file/59645628423.pdf
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/ab98ce2565859f4a5ff8929b18e5e871/lewupemuzejinenezetudefen.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/14e84247f7d00091da73f32c88b8a3c4/96929171196.pdf
    • http://sushiloverca.com/uploads/files/66572831389.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0dea4f626---57774786930.pdf
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/97f1231781a4e23811cb9e54bb7b29dd/setefemupuwo.pdf
    • 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_off0002a2d0.bin
4ad07936643886bc8746b96692b9c349fd287efe99ae66f5de8a3d99ef024877
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2D0 10424 bytes
font_01_sfnt_off0002ba7d.bin
4e5e41493e1bbde7f7f0a45b75482a474902d8838d1a89a5307811a7e604b62f
pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA7D 20004 bytes
font_02_sfnt_off0002ef79.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF79 16792 bytes