Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c024bcc88c0179c…

MALICIOUS

PDF

91.5 KB Created: 2021-09-01 12:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e9f664102f61cdf0039e2fe22e662756 SHA-1: 9fb882eee68faf4d674b4b6d628a20c424c80fce SHA-256: 7c024bcc88c0179ce88b8c7cb1af558a348a846f54b8820c70129c9e48e1ac2e
124 Risk Score

Malware Insights

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

The file is detected as a phishing trojan by ClamAV. Static analysis reveals it functions as a link farm, directing users to multiple external websites, many of which are hosted on compromised CMS platforms or disposable domains. The embedded URLs suggest an attempt to direct users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4851

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/2bf0daf6e03af2150d970a0a4ea4b9ba/83337338546.pdf
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd3b9726c6---mozizifunobul.pdf
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084e11b646ae---kakibadezevekevasoj.pdf
    • https://stancijanegrin.com/UserFiles/files/jomurumotopewupa.pdf
    • https://szalkasszorutacskok.hu/app/webroot/files/content/files/gaxodebavakanapanetatisov.pdf
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160cb4d4f0a19a---lobubufosofudipixavi.pdf
    • http://whs1979.net/clients/65916/File/widodesitoda.pdf
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c5fa81233b9---kujaro.pdf
    • http://chaukitchen.com/uploads/files/15351714751.pdf
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/16093d4368860c---panukenedes.pdf
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/48022440985.pdf
    • http://bkht.vn/userfiles/file/82199884161.pdf
    • https://szelvedojavitasmiskolc.hu/files/files/godevulerigutuniror.pdf
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/9ef5a1d626d8db7535202d3b30431141/bimalolovebev.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c8866880ff6---57124748176.pdf
    • http://xn--2osv9pt2jfpt.com/uploadfiles/files/76529597271.pdf
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092f5d551646---lotojibopikibobekafix.pdf
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/ef193cb65f420c7d2d56e7d9eea553b4/wejuwel.pdf
    • http://anandtouristcorporation.com/uploads/99558082446.pdf
    • https://jnvhardoi.org/ckfinder/userfiles/files/42393678840.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/o3v0o7t5o29kp60d90skgg0hgv/73699712078.pdf
    • http://pillshop.ru/uimg/files/32384937749.pdf
    • https://stef-nancy.fr/upload/document/tagetinovovekanimesafaro.pdf
    • https://kermoulin.com/userfiles/file/zowebat.pdf
    • http://ottotech.center/userfiles/file/redafuzizijufevesefo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=william+shakespeare+sonnet+116+meaning
    • 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_off0001108b.bin
c980a38b51dc184b28e5c956a9d0fdd2ba19defebca0be035f71d7fe0bdd8049		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1108B 11004 bytes
font_01_sfnt_off00012a04.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A04 16792 bytes
font_02_sfnt_off00014216.bin
a80b6d90795f5918d43d04e80b41d7e8a1ae6a372cbee6d3ed3b72f0fe7dfbc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14216 19688 bytes

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