Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1702838de8bc99…

MALICIOUS

PDF

76.3 KB Created: 2021-09-15 20:37:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f4fdd0950aca669131e5c1f878dde3fc SHA-1: 03fa180275e296ad4a9fa9f8bd617e085d722f16 SHA-256: ff1702838de8bc99fa0ece415a4809351a6e24827789e883226669f1e2b322f7
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to lure users to potentially malicious destinations. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The file's structure and content suggest it is part of a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4602

Heuristics 5

  • 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
  • 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://mmoxx.mn/userfiles/files/deluvuvufux.pdf In PDF document text
    • http://daming-school.com/userfiles/file/84773733051.pdfIn PDF document text
    • http://kantipursecurity.com/userfiles/file/tejijunamixupunise.pdfIn PDF document text
    • https://pecintajp.com/contents/files/20738978058.pdfIn PDF document text
    • http://bk-plus.at/userfiles/files/gudobipijupuwad.pdfIn PDF document text
    • http://cartopack.be/Images/file/mafawamino.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/49013312638.pdfIn PDF document text
    • https://tiguan-wiki.ru/file/vuxafotet.pdfIn PDF document text
    • http://hoangminhphatkorea.com/webroot/img/files/vovem.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/af1cffcadbfaaef939091e0ac9b94e72/84932151443.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/jurixuwugajige.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/26qlhg7eos002vtbt2lh3sbcc8/karozedovefek.pdfIn PDF document text
    • https://biroestarsa.hu/uploads/file/76528475443.pdfIn PDF document text
    • http://stilna-ya.com/_userfiles/file/rilolugaxe.pdfIn PDF document text
    • http://arcenevents.nl/site/upload/files/78414129085.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/3fa92e34f1c790a82767423ebe95dd82/wobixusojokexow.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613951ac7c223---23647304909.pdfIn PDF document text
    • http://traktor-tv.de/sites/default/files/file/vugowoworonemosebiwoxu.pdfIn PDF document text
    • https://cuatudongsaigon.net/uploads/files/24966032273.pdfIn PDF document text
    • http://boston.pl/fck_pliki/file/mobiresiniwunifoxigejuz.pdfIn PDF document text
    • http://dison.cn/filespath/files/20210913142850.pdfIn PDF document text
    • http://tai-group.com/upload/files/tomuvitewotutanimejuzitof.pdfIn PDF document text
    • http://interface-referencement.com/userfiles/file/rudesuderuwizuruzuge.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=human+evolution+pdf+free+downloadPDF link annotation
    • 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_off0000d461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD461 17564 bytes
SHA-256: ce2953eaf8ec634cb88af40a12bba23b4057b68291b171d45eae68e96d206905
font_01_sfnt_off00010259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10259 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A70 10736 bytes
SHA-256: eae1c2be14822213305c7bccd91e0d991231a88657179fc79f47746a68b6351b

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