Malicious PDF — malware analysis report

Static analysis result for SHA-256 304e98af27125e93…

MALICIOUS

PDF

85.9 KB Created: 2021-07-18 01:57:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 3223466d9687f6aa0ab1b9b2e59168c0 SHA-1: fe43ddf2b084a3be1d2d7d023790693f8a282e3d SHA-256: 304e98af27125e9300422bfd7596364315099e904a8a34a5692be1f48787e363
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4647

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 http://imaginove.eu/data/Files/zusegigakezuluzebupaw.pdf In PDF document text
    • https://vmwarts.com/ecovic/file/zizudojob.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/goxiwiruxibo.pdfIn PDF document text
    • http://blbr365.com/userfiles/file/1621462232.pdfIn PDF document text
    • https://synersys.fr/contenu/file/xavofisuwonekegekiwo.pdfIn PDF document text
    • http://hnc2.com/userfiles/file/96375784463.pdfIn PDF document text
    • https://waroproject.com/file/78268979067.pdfIn PDF document text
    • http://arabic.cz/ckfinder/userfiles/files/redexazev.pdfIn PDF document text
    • http://e-cluny.cz/UserFiles/file/24499028591.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/10156974078.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-5-3/20210503205437365229.pdfIn PDF document text
    • http://gewoongroen.eu/app/webroot/files/userfiles/files/61993725453.pdfIn PDF document text
    • http://misterholidaysanprisco.it/userfiles/files/pegano.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/67m854aukg66do2g5jihnj7s5o/xisemi.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/doxadopowodux.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/a1c2a20650594856b155ae9cccedfbba/wulosaxedurejipow.pdfIn PDF document text
    • http://igorodstore.ru/files/userfiles/files/91380447081.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160872904b31ee---47540088616.pdfIn PDF document text
    • http://paletydozahrady.cz/ckfinder/userfiles/files/vewoguralazo.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/4972d5c2a2289ebeeabf3fc163f450d4/janubifokulevodagade.pdfIn PDF document text
    • https://doublehaircenter.com/upload/ckfinder/files/xukob.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/8399886103.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=rich+people+problems+storyPDF link annotation
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108EA 10672 bytes
SHA-256: dff904c499e24e35dec108e66b33afc2c8f8af201993399c863a98fe0dc13ff8
font_01_sfnt_off0001212e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1212E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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