Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0679f4fffe48eb…

MALICIOUS

PDF

80.0 KB Created: 2021-09-09 00:23:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 4f1846707309f0b2199e14b63e7d25ad SHA-1: 81b741faa7d288cfc074c3cb3027b28247618c11 SHA-256: ed0679f4fffe48ebb315f427333cbb9a27634250cd3110242d579871840d063e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, many pointing to potentially disposable domains, suggests a link farm designed to redirect users to malicious content or phishing sites. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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
  • 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 http://athaj2.specialty-match.com/upload/files/lufimuf.pdf In PDF document text
    • http://ckrestaurantgroup.com/ckfinder/userfiles/files/tegusog.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/nomikepizedolovexebarir.pdfIn PDF document text
    • http://lamardaegu.com/upfile/user/file/37067763030.pdfIn PDF document text
    • https://108pizza.pl/uploads/userfiles/files/sebizenapobepusejigidokiz.pdfIn PDF document text
    • https://kaptenhoki.org/contents/files/firaxuranegesikoxes.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/23dc64a277304a514cadd879b6a39d89/33428415767.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613158edd3cf1---ronidasewem.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139253d8321f---17852379395.pdfIn PDF document text
    • https://lengthening-sldf.com/userfiles/file/xabarugufi.pdfIn PDF document text
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/kavabojawomeguvevorowu.pdfIn PDF document text
    • http://nhatrangpalace.vn/app/webroot/upload/files/27530827934.pdfIn PDF document text
    • http://sosonomo.com/ckfinder/userfiles/files/62051134390.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/14484220536.pdfIn PDF document text
    • http://cheniou.handysociality.com/upload/files/7796897566.pdfIn PDF document text
    • http://pure-chiral.com/upload/files/51936069002.pdfIn PDF document text
    • http://stluciachamber.org/uploadedImages/contentImg/file/71086166880.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/60823160883.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/64569273836.pdfIn PDF document text
    • http://boldogelet.hu/media/rotejatonadaxepatipan.pdfIn PDF document text
    • http://www.superior-inkjet.com/login/ckfinder/userfiles/files/joxebivatevuvikuj.pdfIn PDF document text
    • https://eijo.in/ckfinder/userfiles/files/xuzubokiwurajomabufazim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=download+play+store+android+tvPDF 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_off0000d6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eefe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFE 16496 bytes
SHA-256: 7d4761810a3af59c1f8e63a82da42da6e28eaac8bf3f87e893321842b5c91574
font_02_sfnt_off000119ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119AE 10652 bytes
SHA-256: 260b164ac0551005649db79a40c030a177c24073b9faa52de0c6e6480e7786ff

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