Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e0cf9b449cafde…

MALICIOUS

PDF

68.0 KB Created: 2021-10-04 03:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: badb8327d627aa9ae0e3308f633272c8 SHA-1: 264e15f5a84cfd2ee531a4646027f026a7280acc SHA-256: 09e0cf9b449cafde955881a3aa58294b27173c21867989f84c39665c77e2d85c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing or scam campaign. The PDF contains embedded JavaScript and numerous links to domains that appear to be part of a link farm, suggesting an attempt to redirect users to malicious content. The heuristic 'SE_CALLBACK_LURE' further indicates a potential for callback phishing or tech-support scam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://akamercedes.com/images/uploads/files/96417360117.pdf In PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/a211fc973e7559df4cdab8f1a1b7fb2b/lavovevinen.pdfIn PDF document text
    • http://nscenter.cn/upload/files/53980322064.pdfIn PDF document text
    • http://aluminial.pnh.pt/js/ckfinder/userfiles/files/74250323506.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/tj20hnllkbve928u38dgeidvv4/14002740842.pdfIn PDF document text
    • http://gro-felix.si/uploads/97092233729.pdfIn PDF document text
    • http://xn--80aadcnaeutgftohcogh8i8dsc.xn--p1ai/pict/file/43521692421.pdfIn PDF document text
    • https://elsadaulte.com/ckfinder/userfiles/files/xipuzosubereraxaje.pdfIn PDF document text
    • http://scro.ru/pic/file/75033891269.pdfIn PDF document text
    • http://shyjjc.com/v15/Upload/file/20219132051444260.pdfIn PDF document text
    • http://bettynblue.com/upload/fck_img/20210902/file/99337060168.pdfIn PDF document text
    • http://mynotary.ca/sites/all/sites/mynotary.ca/files/64759769011.pdfIn PDF document text
    • http://goodwill.pl/userfiles/file/vuxesamefetokazutivinive.pdfIn PDF document text
    • http://otestmanager.com/club/data/userfiles/file/20210913133628.pdfIn PDF document text
    • http://eastcity.hu/ufiles/file/99074375528.pdfIn PDF document text
    • http://15441707.com/data/board/file/20210922200345.pdfIn PDF document text
    • https://havilahbuilders.com/userfiles/file/91032589016.pdfIn PDF document text
    • https://tamm.be/_files/file/wuxumoxuwogupevi.pdfIn PDF document text
    • http://registermycompany.in/admin/userfiles/file/71904182667.pdfIn PDF document text
    • http://soloparamideco.com/js/new/fckeditor/userfiles/file/37849756492.pdfIn PDF document text
    • http://uticachemical.com/files/upload/files/83189178510.pdfIn PDF document text
    • http://futuralagoparking.eu/userfiles/files/45389210945.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=anatomy+lessons+from+the+great+masters+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off0000ac8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC8D 14644 bytes
SHA-256: 3039194a8227411889445dc46be6ccbbe447790282e3bb4c722bed8ec1228818
font_01_sfnt_off0000d15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15F 10948 bytes
SHA-256: f25d910eddd4cd49634c54ed772c4db100b657b9680c981c29d9661dab8ac670
font_02_sfnt_off0000ea76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1