Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ccc5c495b77c315…

MALICIOUS

PDF

63.7 KB Created: 2021-09-17 07:04:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: aef550e904d521caa404ce6a44e2da17 SHA-1: 10a1d302262dd1846ab9fc10efd0587357a6e101 SHA-256: 7ccc5c495b77c3150e0d2de35dfd3de4e4af29c784adfc6aebcad9bbc4efb57a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded URLs pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to deliver malicious payloads or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3110

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://ketchas.ru/uplcv?utm_term=movierulz+mumbai+saga PDF link annotation
    • http://ff-engineering.com/userfiles/files/wavuluruxezovovukejij.pdfIn PDF document text
    • http://studioiulianella.it/userfiles/files/63319783506.pdfIn PDF document text
    • http://cdkuysuujk.handysociality.com/upload/files/begezemunafakudobove.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/fn4mdfmn8mi5d8pg48tc4mhibu/23156434510.pdfIn PDF document text
    • http://ginzaramen.us/uploads/files/medelafuzusenid.pdfIn PDF document text
    • https://etonbio.com/newsLetters/images/file/sirunaleferojofovalu.pdfIn PDF document text
    • https://office-agglo-larochelle.fr/userfiles/file/1945012383.pdfIn PDF document text
    • http://group-anons.ru/userfiles/files/80899595134.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f98ddb58a1---filuleganemu.pdfIn PDF document text
    • https://bilalyapidekorasyon.com/userfiles/file/91183428018.pdfIn PDF document text
    • http://em-mould.com/ckfinder/userfiles/files/98829084903.pdfIn PDF document text
    • https://chatham-ebenezer.ckdomain.com/uploads/userfiles/files/67100313046.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/80388520889.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/42779203239.pdfIn PDF document text
    • http://huspanda.com/data/ckfinder/files/85615718182.pdfIn PDF document text
    • https://pinpointfeedtech.com/ckfinder/userfiles/files/gazisaxukabanamozam.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/18735020300.pdfIn PDF document text
    • http://greenld.com/userfiles/70374088186.pdfIn PDF document text
    • https://comillaspostgrado.es/userfiles/file/87916738495.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/95b3014b78ed7f05f288389ab92faa4d/87450278265.pdfIn PDF document text
    • https://sunsetlearningcenter.com/userfiles/file/kajakonojazakogivopuman.pdfIn PDF document text
    • https://www.vasutaszeneiskola.hu/ckfinder/userfiles/files/58995467634.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/ziserimerusuv.pdfIn PDF document text
    • http://thelonerangerfanclub.com/ckfinder/userfiles/files/vufugemaw.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/rofapovanukajazasobotiki.pdfIn PDF document text
    • http://goldway.jp/upload/board/file/33369883418.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB864 16432 bytes
SHA-256: f73fe55fde45faf9ef8d2565a56dc75dab1ba63c2d53f5e5a06f9f5eeb9cfdb8
font_01_sfnt_off0000e2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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