Malicious PDF — malware analysis report

Static analysis result for SHA-256 212c434017086baa…

MALICIOUS

PDF

106.0 KB Created: 2021-06-30 19:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 93508f62515848388e2aaa59cc7ff819 SHA-1: aa1b5aec8f2f64c3906249f50444daf08e2600c5 SHA-256: 212c434017086baaa0a3fc6c01d45babbb694ec6b01be4c469ed87f1a580a25a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised WordPress upload directories, suggesting a phishing or redirection scheme. The presence of these links indicates an attempt to direct users to malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9790

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://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098576f90e60---jopuji.pdf In PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/73307916804.pdfIn PDF document text
    • http://ladyvenus.it/userfiles/files/zapojosakovunalazi.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/7111b9d7773ca243c20acf04d004502b/jobunenewefujoxubudi.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/97413454303.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/ffdc0efc3b02219d5a9bcb16b9892c7b/85662927707.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078a0c63918e---99250976878.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a23006412---67937993336.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085bc2930009---45077969335.pdfIn PDF document text
    • http://hykylalumni.org/userfiles/kowexitusedajazeku.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd8083bdf58---lokebawonuvudo.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4e4d0274d---83928198065.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b382a3a1c6---serezevimamadugab.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/ocm4v7icdvitv0kmnus42s6gg2/9440682461.pdfIn PDF document text
    • http://darienhigh70.com/clients/878490/File/59912395175.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/9e70fb59d13cfbf9af22e0acc04bed23/goler.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb5e10626a---laxulewogiwelewawukovi.pdfIn PDF document text
    • http://beergolfers.com./blog/images/file/62417884082.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/bff77a51b8525216b68f3d29a87e5719/voluwudovewok.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a274d6148---77190804391.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/531evg912t4re1pi5afdkq8v4s/takiwatoxesipurugelu.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c953f05aae8---butezavuvafesixomupaluge.pdfIn PDF document text
    • http://cupta.org/userfiles/files/20210531161022.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/74093825036.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/7d032227b5839a1f32c36db9a7ef6cc5/vitabowipi.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcb0fdd977---71723375890.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=picture+draco+malfoyPDF link annotation
    • 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_off00013992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13992 18952 bytes
SHA-256: 22feae43ed1acd1ce7596c36b0ff9b091b039e314b3e3ab0c501c7d6d6c1555c
font_01_sfnt_off00016a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A71 10580 bytes
SHA-256: f9605c7d5483f64bcb2da30448503e68d72bf83391c3f256b853c286bd33da27
font_02_sfnt_off000182ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x182AD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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