Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fea3297dd014fcf…

MALICIOUS

PDF

70.3 KB Created: 2021-10-04 14:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 637370aec7259888db4b71a37a9f2474 SHA-1: 9dc369ef80480f21d8fd1974803e3a73eaacaeac SHA-256: 5fea3297dd014fcf79b8a95cc90f69161c5eb14de9e64ba4b5664f0fd254579c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to disposable domains or are structured as link farms, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest malicious content, likely phishing or malware distribution. The file's structure and numerous external links align with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6474

Heuristics 4

  • 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.
  • 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://cructi.ru/uplcv?utm_term=free+parts+of+speech+printable PDF link annotation
    • http://sungsam.net/userData/board/file/5158907566.pdfIn PDF document text
    • https://avukat.dnsaktif.net/upload/files/gazalebegufowato.pdfIn PDF document text
    • http://corising.info/sa_upload/userfiles/file/20210901135443.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149cd574854f---4006610098.pdfIn PDF document text
    • https://bak.vn/upload/files/66304171414.pdfIn PDF document text
    • https://jills.reviewz.eu/app/webroot/files/userfiles/files/jubusigaxilenijuxubija.pdfIn PDF document text
    • http://registermycompany.in/admin/userfiles/file/14079571341.pdfIn PDF document text
    • http://kolesnikov.pro/ckfinder/userfiles/files/57144751251.pdfIn PDF document text
    • https://xn--fiqa735be48e.com/upload/files/mefifubuvoxidakajasabaz.pdfIn PDF document text
    • http://taigesw.com/upload/files/74092661134.pdfIn PDF document text
    • http://yuhuimachinery.com/d/files/80895319786.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/42260560418.pdfIn PDF document text
    • https://lotte-ppta.com/beta/assets/file/8003509065.pdfIn PDF document text
    • http://nollve.com/img/editor/image/file/mubovegifesokuzi.pdfIn PDF document text
    • http://kozelsk-adm.ru/files/uploads/files/48906436472.pdfIn PDF document text
    • http://irpuyesh.com/cache/fck_files/file/fimumuvorakikirisunodogo.pdfIn PDF document text
    • http://dmhu.eu/uploads/uplib/file/44348316641.pdfIn PDF document text
    • http://henanshuangxin.com/d/files/xusuvupamolixafetapukuka.pdfIn PDF document text
    • http://www.sname.org.tw/sname/ckfinder/userfiles/files/38654182708.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/jmtjg23ub5is1e0bq27790umo4/jiwetojupi.pdfIn PDF document text
    • http://tns-china.cn/editor_upload_image/file/72943664667.pdfIn PDF document text
    • http://sanzmendia.com/userfiles/files/90178762379.pdfIn PDF document text
    • http://auto-rad.pl/userfiles/file/77043347144.pdfIn PDF document text
    • http://jedwines.com/cmsCart/upload/file/kotunosuwalinukajiso.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC49 19600 bytes
SHA-256: cbc4a4194f4a9638030f2dfe2a01c1c1de00b68320e7f894821be92992d042ac

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