Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff2e0a91fa79631…

MALICIOUS

PDF

83.3 KB Created: 2021-09-10 18:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 4a3566278e26a48736d7906d3166fc6e SHA-1: 4c65c4c67afddb311181ffa42a500d0bc56d6d32 SHA-256: 2ff2e0a91fa7963138fba0fbd6a8b1fc41a8cfb801269562ff2393324fd8c0db
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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 https://smidgel.ru/uplcv?utm_term=among+us+hack+download+free PDF link annotation
    • http://sunnyten.net/userData/board/file/sunujemaxujevologes.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/fef3c11fb692decae6b367071c9b4eb4/6723474251.pdfIn PDF document text
    • http://olympiad-bigben.ru/ckfinder/userfiles/files/filitolajama.pdfIn PDF document text
    • http://gemaeldeundobjekte.de/uploads/files/ratavadijeder.pdfIn PDF document text
    • http://trendstyleimage.com/uploads/ckfinder/userfiles/files/13634436460.pdfIn PDF document text
    • https://tommytest.dish1314.com/data/html_editor/files/sigagumanafu.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/mozofuliduzanukalumikik.pdfIn PDF document text
    • https://kclandscapes.com/ckfinder/triplebuserfiles/file/dosogamazivob.pdfIn PDF document text
    • https://snapstudios.ca/userfiles/file/20122385020.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/wudugamutuzutog.pdfIn PDF document text
    • https://xistenze.nagydavid.com/files/files/juzujovik.pdfIn PDF document text
    • http://ballarioarchitetti.eu/userfiles/files/sitavizibupo.pdfIn PDF document text
    • https://myreply.mobi/snappshott/editor//file/3560393801.pdfIn PDF document text
    • https://rwd1.thadv.com/upload/files/fajadafukewagimukola.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/pidov.pdfIn PDF document text
    • http://bachova-terapia.sk/images/file/lufomogezozedesivuk.pdfIn PDF document text
    • https://venefoil.com/ckfinder/userfiles/files/sevipelobezatomipo.pdfIn PDF document text
    • http://theflowermaker.com/uploads/File/79015583680.pdfIn PDF document text
    • http://trufeel.com/ckeditor/ckfinder/uploadfile/files/wowulef.pdfIn PDF document text
    • http://vindindex.nl/images/uploads/36309831802.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161335445c30c6---vixegepupagoz.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/34827106405.pdfIn PDF document text
    • http://agedwedfjtj.pretty-match.com/upload/files/kadidobijazoj.pdfIn PDF document text
    • https://digireg.lu/upload/fufiv.pdfIn PDF document text
    • http://jurabos.nl/include/editor/file/dumajotunifuxefugapini.pdfIn PDF document text
    • 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_off0000df4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4D 10992 bytes
SHA-256: ab62d841ded4c4e911208f1fa026b8971b26c4ff4e5435ef0c5b5a5ca0e86c79
font_01_sfnt_off0000f88e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF88E 18152 bytes
SHA-256: 2073c11efc73501f655f3c1fcef66fd16ce089d6d506542198063c5f7a834904
font_02_sfnt_off00012805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12805 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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