Malicious PDF — malware analysis report

Static analysis result for SHA-256 69436f1e706d367e…

MALICIOUS

PDF

87.1 KB Created: 2021-06-30 08:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 72d9cab7f19ee0280429761f21ced5ba SHA-1: 147e70a47f0a1a066a9c4300e89f090a0f5e06b9 SHA-256: 69436f1e706d367e69c3d81f991d11b63a80419d0b1d6cb9fc4291c0262ed55a
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress sites, suggesting an attempt to distribute further malicious content or conduct phishing. The presence of embedded URLs and the overall structure indicate a lure to download or interact with malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/433ae5bc8658c25b4e51833140072825/95683863160.pdf In PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088164e4e263---17179123601.pdfIn PDF document text
    • http://playbabydoll.com/userfiles/file/xowukabixikiledekibata.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609837a65a230---84532629432.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160921b7ac4082---fubejivodoxigu.pdfIn PDF document text
    • http://purifoy2020.com/clients/1/11/118d8b7ee1ea4bab8fb19da95c56260f/File/wajawodexufa.pdfIn PDF document text
    • http://studiorinaldibedin.eu/userfiles/files/nezujubunulibifenowexok.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/aa8c0baddd1ffbb2bc506a4b3af885a2/16324938296.pdfIn PDF document text
    • http://etasystem.net/userfiles/files/wudubeteribupuka.pdfIn PDF document text
    • https://nslogisticservice.com/userfiles/files/gumap.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/21294622427.pdfIn PDF document text
    • http://merklink.nl/site/data/ws/files/pager.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/7052d3fb8ee9a77ad69b22695df217b1/midixiwuli.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/3702689dba564177f77eeab9fb0716fb/84143439800.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/c6b97a8867f749385755a04178defefe/22458797530.pdfIn PDF document text
    • http://bendhorseride.com/userfiles/file/29878513919.pdfIn PDF document text
    • http://teplospectr.ru/images/files/60688119724.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/a1a9045bb1f7f439ab7a7f788ab22fdf/46847958047.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/69800351501.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e0080e2ba---49105428466.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/58981073915.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/3b2d4f564e321649b78483524adb89e2/57244562667.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1607e01cd2c597---38852461488.pdfIn PDF document text
    • http://nhadatv.com/webroot/img/files/nawipegamijo.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c43fbee581c---jakiradozudekelu.pdfIn PDF document text
    • https://greenfuturevietnam.com/Upload/files/nimajuviderudorofiv.pdfIn PDF document text
    • http://france-ex.com/images/blog//file/selonomiwujipag.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=gate+2016+ee+question+paper+with+solutionPDF 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_off0000ed96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A8 17280 bytes
SHA-256: 9611ae658c391cddb0c505c426ffc5b36f164cf38926a931f90380357786bef4
font_02_sfnt_off000132bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132BF 11180 bytes
SHA-256: 937dfd9ce538f6772de3e7fd9b766ab5cbd60bd17da9cb0f48fa77252cf0ff62

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