Malicious PDF — malware analysis report

Static analysis result for SHA-256 1babeedeb8333843…

MALICIOUS

PDF

129.3 KB Created: 2021-07-08 19:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: cc3cc2aafd08041ac99b364fde16f20e SHA-1: 9981c89caebe1998a692044ac1baac09f500f3d0 SHA-256: 1babeedeb8333843a303869dc38d1f3b205c7680c1ad9d36df751a5e30e29251
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farms indicates an attempt to lead the user away from the document to a potentially harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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 https://crysiq.ru/uplcv?utm_term=phillip+fulmer+tennessee PDF link annotation
    • https://tecnibat.net/uploads/archivos/tujalemufaruxawemopig.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081cf4466b24---20815255835.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cd200ff0375859c1442375a75ce74c7f/kajuwozoxagewib.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccd2fc6f705---wopajajomuga.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16086ced01aa16---11401790221.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/78755066204.pdfIn PDF document text
    • http://haithuanphat.com/uploads/files/47207730648.pdfIn PDF document text
    • http://sparkpro.lv/content/file/12446659130.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16075b58e3cbf9---farezun.pdfIn PDF document text
    • https://vmwarts.com/ecovic/file/42096726307.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/buworapet.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16082559f40df4---98937295080.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0fb8aac992---11790153133.pdfIn PDF document text
    • https://datxeninhbinh.com/data/dulieu/files/39536658137.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a35874e10---bememigufesomexoror.pdfIn PDF document text
    • http://dtcguild.org/clients/80367/File/xinidozotixedijagebiz.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/12384f52e57381969f2991dabfa1e714/xifixolira.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948b3126b69---72026473694.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608479552b16e---81516410467.pdfIn PDF document text
    • http://cokhitienvuong.com/uploads/files/sufumibuwowoxufizudun.pdfIn PDF document text
    • http://acril.ru/ufiles/files/sokodepifokefal.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/4f7d7656f196b59501c1a1e1e097d078/33914205025.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/71254839142.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/bujezanop.pdfIn PDF document text
    • http://interface-referencement.com/userfiles/file/bukebanuwujunibunevezod.pdfIn PDF document text
    • 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_off000199eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x199EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001b202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B202 10440 bytes
SHA-256: 92ef01e4a3f4007937fe50d7ef1e8940d7fe62e7bd3af4e06b6047386001141d
font_02_sfnt_off0001c96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C96F 17588 bytes
SHA-256: 6bc28f35dbc2978f203b4878afde872efcaebe866a40d656801d9687aa7cee66

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