Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c17690fd840888…

MALICIOUS

PDF

53.9 KB Created: 2021-09-17 15:21:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 85026d7d3a29ac5e1467ab886f594092 SHA-1: 37792f041ff15d4750d3ad8ef12e4dd4157ce28d SHA-256: d1c17690fd8408880ab59d9e0b5f369287567801d137a6b5fc69de740d35cc22
144 Risk Score

Malware Insights

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

The sample is a PDF file flagged by multiple heuristics and ClamAV as malicious, specifically indicating phishing or trojan behavior. It contains numerous embedded URLs, one of which points directly to an IP address (185.33.116.145), a common tactic for hosting malicious content or phishing sites. The PDF's structure and embedded links suggest it is intended to redirect the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8276

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://sarkar.ie/userfiles/file/sebimanenidaxuti.pdf In PDF document text
    • http://monthclean.com/uploads/files/202109110349034092.pdfIn PDF document text
    • http://www.farmaciapenil.es/userfiles/files/zanikavofamadivarumixisu.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5f7727cb2---temuvomap.pdfIn PDF document text
    • https://implantologie-deva.ro/app/webroot/files/userfiles/files/gokozotowiburafukafusu.pdfIn PDF document text
    • http://archetipoingegneria.it/userfiles/files/85418640364.pdfIn PDF document text
    • http://cyklo-sport-servis.cz/UserFiles/File/56073056492.pdfIn PDF document text
    • https://groupekheidri.com/ckfinder/userfiles/files/34316029635.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/totojobasoroneli.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/fawuguworupolerexavasoful.pdfPDF link annotation
    • https://mobilaide.com/upload/editor/file/43647769421.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/tarigipiwo.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/78941704377.pdfIn PDF document text
    • https://ausztriasi.spawellness.hu/upload/hirlevel/files/25441075536.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/86440155912.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/wetenif.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/zomedon.pdfIn PDF document text
    • https://total-sport.pl/img/upload/files/61897654233.pdfIn PDF document text
    • http://centrons.com/uploaded/file/11930285826135a67431063.pdfIn PDF document text
    • https://phongkhamtamthan.net/uploadeditor/files/64309169805.pdfIn PDF document text
    • http://rjt1.org/upload/files/36632257268.pdfIn PDF document text
    • https://nuttydog.hu/ckfinder/userfiles/files/sexafixegopoje.pdfIn PDF document text
    • https://e-ceramika.pl/userfiles/file/35213230415.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=split+screen+apkPDF link annotation
    • 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_off0000b07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB07E 15100 bytes
SHA-256: 57121fcf3e71266a3b968d7ff08b64a2715f288df1d29bab12b6a1ba43db1bad

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