Malicious PDF — malware analysis report

Static analysis result for SHA-256 9012e5e64289f4b1…

MALICIOUS

PDF

79.5 KB Created: 2021-09-16 19:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c60f80569297addbc10f592226a8379d SHA-1: 83683faf2886f9c9335a21527bf2bca5db14d8e3 SHA-256: 9012e5e64289f4b1fe4304c9d3182240374b619b3ba0a13977c5475d341a7896
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, indicating it is designed to redirect users to a network of sites. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic suggests these sites are part of a link farm, likely intended to host phishing lures or distribute further malware. The ML classifier and ClamAV detection strongly indicate malicious intent.

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://kingsauto-bar.com/js/upload/files/77134321472.pdf In PDF document text
    • http://missteenqueenuk.com/userfiles/file/vofurevalanoru.pdfIn PDF document text
    • https://newfrio.com/userfiles/files/35435952673.pdfIn PDF document text
    • https://mavachhaiphong.com/upload/files/53288054068.pdfIn PDF document text
    • https://netwindowvn.com/uploads/userfiles/file/zuvoketebo.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161383c5914b53---nuwovu.pdfIn PDF document text
    • http://tauben-buchmeier.de/kleinberliner-schuetzen/userfiles/files/89868098546.pdfIn PDF document text
    • https://krusomying.com/data/file/789754462.pdfIn PDF document text
    • http://4tyres.nl/public/files/40863288675.pdfIn PDF document text
    • https://eghamatkade.com/basefile/eghamatkadecom/files/42647161003.pdfIn PDF document text
    • http://bienbao.net/uploads/files/mipotulafedifoxeve.pdfIn PDF document text
    • http://cnex.cc/images/blog/file/zugixagowoj.pdfIn PDF document text
    • http://yoga-privates.com/yoga-privates/file/41027144784.pdfIn PDF document text
    • http://vladekoservis.ru/files/26063841436.pdfIn PDF document text
    • http://bbdecontra.com/userfiles/files/32954444581.pdfIn PDF document text
    • https://sentinels.ro/userfiles/file/visipodibadoz.pdfIn PDF document text
    • http://dirpub.org/editor/ckfinder/userfiles/files/memusojesonuzotulawi.pdfIn PDF document text
    • http://weilandensemble.nl/ckfinder/userfiles/files/33136153800.pdfIn PDF document text
    • http://ducthai.vn/userfiles/file/86252791483.pdfIn PDF document text
    • http://evrofurnitura.by/elax-furnitura.ru/uploads/files/3759124920.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139c009f2722---xomitujamumemabet.pdfIn PDF document text
    • https://sunnyrosesschool.com/userfiles/file/61407466210.pdfIn PDF document text
    • http://krzeptowski.pl/file/marajidevobido.pdfIn PDF document text
    • http://carrozzeriabosini.net/userfiles/files/43993159416.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=game+crack+apkPDF 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_off0000d44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC60 18012 bytes
SHA-256: cbcbc0b11efe235ddb6e95a02b81391975f2b970d4866eb2b4c6c0be882ace46
font_02_sfnt_off00011ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB3 10040 bytes
SHA-256: 7ab5fe7b59293b7b5977210ad0b63cd9c575c239a3d821a8d0805025cdf55d55

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