Malicious PDF — malware analysis report

Static analysis result for SHA-256 96208a6d59371f7f…

MALICIOUS

PDF

112.9 KB Created: 2021-07-18 22:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 54ec48d36150a08aed64904dfaeb04d8 SHA-1: a51b6119a9dcd6600e5338117d6c921427560ec9 SHA-256: 96208a6d59371f7f54659583521a13affaef5ed2060453fb8eed6c6e71d666fb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and disposable hosting sites. The primary purpose appears to be directing users to malicious content, likely for phishing or to download further malware, aligning with the characteristics of a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://fertilizerproductionprocess.com/d/files/90530597038.pdf In PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/69351c72ff2e70eafdc2508d3114412f/jikikefulapisofi.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/ej2noiv4e3ebpvpgmu0qgaj7ic/80195780317.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607218c132417---dewudopeturitabur.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce1c940070---52567168634.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607c2cf409dd0---xuwom.pdfIn PDF document text
    • http://df-2.de/images/daten/file/87456418139.pdfIn PDF document text
    • http://capitalclassof1971.com/clients/4/4c/4c1e4f015ba9b8bec237dc1ca705466d/File/87802716096.pdfIn PDF document text
    • http://changju-hotel.com/CKEdit/upload/files/74984247322.pdfIn PDF document text
    • https://arnetbilgisayar.com/upload/ckfinder/files/zenesabexejagipedag.pdfIn PDF document text
    • http://duda-tech.pl/dudatech/upload/file/zadudaragarotoriluguf.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/e0c6d2ecc388ce134ce39c0397cd9bea/jibagunijakikokoji.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/dd5a36b5558a8ccced7a4ec1b6fdd431/vajejijewurak.pdfIn PDF document text
    • http://www.tramag.pl/upload/file/17761053367.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/lajixabisaginatavabupel.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/78030394261.pdfIn PDF document text
    • https://studiorampinelli.com/file/12481845396.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/8ab4e4e1d821de0dde1e98e69a6411ce/48540734341.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/worelisiponi.pdfIn PDF document text
    • http://restravel.ru/ckfinder/userfiles/files/fosifo.pdfIn PDF document text
    • https://samarpanbharat.org/trila/userfiles/file/74900815501.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/c07d319ccf7f4442dce96de9dba947de/79465160954.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=fast+and+the+furious+tokyo+drift+neelaPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E30 10736 bytes
SHA-256: 219711b473dd7fbd486e4ab4f71e2e8fc42f6575be5dd1b965dc8eb06735463d
font_01_sfnt_off000156c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156C2 16084 bytes
SHA-256: d11bfa2b02c462a3f9075532ce7ec1132ca3691ccd6a850e0dcf0119a218c04c
font_02_sfnt_off00016bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BF6 19332 bytes
SHA-256: 6cafca4ea240c66c56893b6cf70c36aa308a8cb1a7b070ec6a223ee2b6ef9278
font_03_sfnt_off00019dea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19DEA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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