Malicious PDF — malware analysis report

Static analysis result for SHA-256 07cede75f78337f3…

MALICIOUS

PDF

88.1 KB Created: 2021-09-03 06:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1f58890868f93992056112d1a8c671f7 SHA-1: 59a9ffa178abf5cb8a9cd242216a44393d7582ae SHA-256: 07cede75f78337f35be3405ebbc6ae345b9f9caa98bd2cd4aad8a2fe99466c49
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised websites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading a payload disguised as a PDF editor. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd4ce12bd5---60899405102.pdf
    • https://eijo.in/ckfinder/userfiles/files/zexifexogeloriji.pdf
    • https://africanresearchcenter.com/userfiles/file/78792893991.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/d31b165688019f05d9e580735f3f2741/wimuwekurabama.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/987vk7mfnt64v1rnh9g0i2nsj3/89827865364.pdf
    • http://www.abcklima.hu//data/editorfile/tuledoluwimo.pdf
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d3b7baa65---28047748785.pdf
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6bd5056b7---lexoguzomelotamir.pdf
    • https://khotelmarket.com/FileData/ckfinder/files/20210608_FCA7A1A5235CF484.pdf
    • http://zcapitalcrm.com/app/webroot/uploads/files/dotofegopefizeximexit.pdf
    • https://toocapen.com/files/gasabudirakuvafexedatoxe.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/9988odvac6llib6ir9ad8hoqs4/sululelakijamadi.pdf
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/16094754a02ef7---40870146302.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610fa54a0b8e3---38655594728.pdf
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/7cc11d492deda69eef8e09acb7dea5fc/8929596019.pdf
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607446bf02ad5---rateropuzipelotapekata.pdf
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bde0338427d---4386706021.pdf
    • http://kerrya.com/ckfinder/userfiles/files/dikanetotenajibivuk.pdf
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1608b77a10c73a---59641025556.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa6d60931e---64238889187.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2dc94587d---gomesip.pdf
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/98e6054219e11b5e6f6fa4e3499ae16f/94575503464.pdf
    • http://ash-graphy.com/userfiles/file/befitis.pdf
    • http://www.cafeinca.com/img/public/contenido/file/65507734638.pdf
    • https://bouveau-consulting.com/userfiles/file/24582293746.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=adobe+pdf+editor+download+full+version
    • 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_off0000f114.bin
f2da681a5dde724d4a01e785bfe23e4033c9a98cf3f48ed9b15fc6d650d49b39
pdf-font-stream PDF embedded font (sfnt) at offset 0xF114 18532 bytes
font_01_sfnt_off00012184.bin
5e4421d990475d2be217b3be781a17b8f2885ce44b34eab0e3100a94619009cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x12184 10864 bytes
font_02_sfnt_off00013a9a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13A9A 16792 bytes