Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ba18dea51df182…

MALICIOUS

PDF

89.4 KB Created: 2021-06-25 21:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 291e865a5a46102e893bf1c5647578be SHA-1: d0251a80764a7aef3341a2524052ccc977f13900 SHA-256: 45ba18dea51df182fefab0e515124ad050335c49fb7c646388eb30ac1535f9d2
156 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised or disposable hosting domains, likely intended to lure users into phishing sites or download further malware. The presence of multiple distinct hosts and the use of UTM parameters suggest an attempt to obscure the true destination and potentially track user engagement.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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.x454.com/wp-content/plugins/super-forms/uploads/php/files/8cgg54bhc4th5misjepruc94p2/norewevufesewipebapufa.pdf In PDF document text
    • https://fcr-fomentoconsumoerenda.com/uploads/files/malowuradix.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16089bca14c4cb---54483926158.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/xaxikepo.pdfIn PDF document text
    • http://aloeverajuice.cz/files/file/6500512087.pdfIn PDF document text
    • http://grafordexstudents.com/clients/0/05/05b3dbe7dd9dc6f92b523d2b721f2ffd/File/bujivawemulodafejegop.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081b35d33379---ginupeja.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/9sp0a7a9t1v3e7dgpiscmuncab/gixilibunixiguboven.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/fed4ca146aeee9b44b7f6d02a56e0ba3/87323700092.pdfIn PDF document text
    • https://nslogisticservice.com/userfiles/files/zorimemogajukonaza.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c984c6bf74e---35980162275.pdfIn PDF document text
    • http://nail-free.com/ckfinder/userfiles/files/mafap.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/qrntmhlld0kjvlvlr121l8i2h8/87763806811.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/a17cd79f070fac82267304d23ce287cc/50147320817.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/fb4de6d294a9c447417839e76946913e/xarokorusugevavafejigo.pdfIn PDF document text
    • http://studiotecnicomaglio.it/userfiles/files/58826892825.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdb8ad5279---solef.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608256459e6d2---88119887008.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/r15buq9uqf6hh306vn167bp9fu/zewagasepabokuvaguwoloku.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/2d58b1dc30853c1602302b5214741cbb/xaxumarifoziwazaje.pdfIn PDF document text
    • http://feldbach-tourismus.at/files/kudugiwufuvur.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5a19e4dbfe---67691000354.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a56f32e339c---15705003224.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=use+beguile+in+a+sentencePDF 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_off0000f675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF675 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8C 10432 bytes
SHA-256: 90ebc2e21a311f9f7fe049c45d8f57a385cc5112938768f314e20995c5389586
font_02_sfnt_off00012657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12657 18560 bytes
SHA-256: a0e049d7dd3ef72407ac271c1f69ffc5528dc185feeec32a09726dfea77c9184

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