Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0dd5041afccd0a6…

MALICIOUS

PDF

65.3 KB Created: 2021-09-20 03:04:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d0bb2cad90bde9d42886a23229dd3c9a SHA-1: efc2e6c7286438c4bdce13e2d53fb58d0b72980d SHA-256: e0dd5041afccd0a659c5958eb8a7bf648470892bf6411736797cc3ebc27a4220
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of a phishing or malicious redirection attempt, as indicated by multiple heuristics flagging it as a link farm on compromised or disposable hosting. The presence of embedded URLs, some pointing to WordPress uploads and others to various domains, suggests an attempt to funnel users to external, potentially harmful content. While no scripts were explicitly extracted, the PDF structure and URL patterns strongly suggest a malicious intent to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5351

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://www.medic-pneumolog.ro/fisiere/file/64969138516.pdf In PDF document text
    • https://mygoaltv.org/ipp/images/uploads/files/20153011975.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132691bed144---xoroso.pdfIn PDF document text
    • http://canadianrockies.info/files/file/zabezezegavimakemig.pdfIn PDF document text
    • http://cec-intl.ru/app/webroot/files/file/11398781839.pdfIn PDF document text
    • http://yusungchart.com/userData/board/file/19214593472.pdfIn PDF document text
    • https://xn--p3t29jo1ed4o4xw.tw/upload/files/zojiselekolegawawe.pdfIn PDF document text
    • http://studiodugnani.it/userfiles/files/babekukevup.pdfIn PDF document text
    • http://xn--o79av69abka850ab6c.com/upload/file/202109200652130585.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/tigikelabamikofoz.pdfIn PDF document text
    • https://cet.sk/res/file/93577616458.pdfIn PDF document text
    • https://snqrsl.quebec/upload/editor/file/34268310855.pdfIn PDF document text
    • https://duel.pl/userfiles/file/kudebi.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/a11i6ve1lc71is9ire50sd2eo5/riganozanojixizevera.pdfIn PDF document text
    • http://klimatyzacjaradom.pl/userfiles/file/luwolakudivamuwisuvavo.pdfIn PDF document text
    • http://nexxosrealty.com/userfiles/files/kotiruxuberusiworarodef.pdfIn PDF document text
    • http://milwaukee.center/userfiles/file/zefokamubonumupoxujux.pdfIn PDF document text
    • http://pate4me.com/userfiles/file/likikuparofap.pdfIn PDF document text
    • https://saigonservices.vn/images/uploads/files/vikoputusoj.pdfIn PDF document text
    • http://pnlestari.com/visitbali/image/files/68103543407.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/4988476086.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/21514131151.pdfIn PDF document text
    • http://aallergy.friend-match.com/upload/files/ridoxulemizotaluwufabu.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f82431302---98930079566.pdfIn PDF document text
    • http://tonyprins.nl/images/uploads/file/sosutubuku.pdfIn PDF document text
    • http://soundspace.eu/Upload/file/72812734718.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=3+dots+frp+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_off0000da5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5A 17812 bytes
SHA-256: 2b0a8b539ec2e4c62da6e50a6582af480dc5ad5f0463442fa6575341925eea1c

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