Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb3976430206bc2…

MALICIOUS

PDF

94.8 KB Created: 2021-06-27 03:45:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9f4c587b5d0324e1d3b3da2bde0087c2 SHA-1: 987a3b1af8c98bf2ca1ab1b6ac347194a2d4e170 SHA-256: 3eb3976430206bc2fa3964bd5b1eb5e4f6735ae9cdd369b6836d72d48266f231
156 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, indicating an attempt to distribute malicious content or phish users. The document body was unreadable, but the heuristics strongly suggest a malicious intent to redirect users to external, potentially harmful, URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://riceart.ir/basefile/files/maloxidetitenusap.pdf
    • http://files.ibiza-ferien.de/file/fabuzutujelivusolozadak.pdf
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d090c4b8dd---70724806589.pdf
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/b7184ebflqvqr8f33487calue7/33986504422.pdf
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/f7d9b2b628624ac5d277784b676f15cc/wuxevisox.pdf
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/e9586339a2b001d237e3e8710243f184/93581015280.pdf
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/82feb5eee52f7dd1045965b5062097a2/digawegodukiwo.pdf
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/609e0a59378ed2583cacd079a85ee5b5/zuxokuzap.pdf
    • https://ludifrance.fr/userfiles/file/4321691716.pdf
    • http://candientuvibra.com/images/file/sexiwawagigop.pdf
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077065674424---natidelafapu.pdf
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/29c3d4342e165edd2daa4bdcb516c461/gebodav.pdf
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/52021723902.pdf
    • http://xn--80aafbanafwvcftiqfecrg2a.xn--p1ai/pict/file/juxajabuxerivebuv.pdf
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e5e2f815f50006dbea9f30e1ddac030d/4258757836.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5ab7ede94---lanagod.pdf
    • https://miguktour.com/FileData/ckfinder/files/20210624_CDB1C132ABCCA69F.pdf
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/eef0bd46d2bf9df0a8053a85d0d7a01f/70610633444.pdf
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609867f0e31ff---fafibezevodajokesisudos.pdf
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/1cvg5rap905ogt9h104vvrhqh3/wolupigigifozexuzisunap.pdf
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7223023f9---90895120776.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609889ac4d4af---lulomaximolemagesik.pdf
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/b6vsshjiaaj9l7l5jpv1ld99k4/93069009368.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=banking+general+awareness+questions+and+answers+pdf
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774356af224---fidadegasurimepeguwa.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_off00010a99.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A99 16792 bytes
font_01_sfnt_off000122ab.bin
ce779650b095b8f3c1e13c2b386fd6616c63f7d1df4f5be361fa627a3934c97d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122AB 17820 bytes
font_02_sfnt_off000151dd.bin
6f09befc569b6c00c54f1514e973692875cf77f0d44d328f105f4af089190d0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x151DD 11152 bytes

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