Malicious PDF — malware analysis report

Static analysis result for SHA-256 47f66f156e99ca13…

MALICIOUS

PDF

86.5 KB Created: 2021-09-09 14:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: 6682748c314024a0be47b10ac61b6141 SHA-1: d476cd222312233701bd33816f0f8b2045e0e601 SHA-256: 47f66f156e99ca1346df9d3b786694335262644bbea1d4dc1079ce89b272b781
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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.
  • 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 http://123dvere.sk/files/file/mepekomofufus.pdf In PDF document text
    • http://etalentlink.com/uploadfile/file///2021090518103467.pdfIn PDF document text
    • http://wwsm-us.com/files/file/75933260758.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/kedolekifulebaki.pdfIn PDF document text
    • https://www.peltonfell.org.uk/ckfinder/userfiles/files/54351918727.pdfIn PDF document text
    • http://wccflooring.com/userfiles/files/26924785019.pdfIn PDF document text
    • https://betsin.org/userfiles/files/17704117658.pdfIn PDF document text
    • http://vuonlan.vn/data/upload/files/686604702.pdfIn PDF document text
    • http://eastcoastbiker.de/sites/default/files/file/kedawo.pdfIn PDF document text
    • http://friend5190.xyz/js/ckfinder/userfiles/files/7088611107.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/zokasodoruwi.pdfIn PDF document text
    • http://bulgankhangai.mn/userfiles/files/sobokuwenuw.pdfIn PDF document text
    • http://imdmotors.com/uploadfile/file/2021090909084183.pdfIn PDF document text
    • http://vejwun.cz/images/72119315260.pdfIn PDF document text
    • http://moderncarrent.com/user_img/files/taremosatuzerobar.pdfIn PDF document text
    • https://habibitours.org/ckfinder/userfiles/files/85437584677.pdfIn PDF document text
    • https://preciseenergygroup.com/media/80271579578.pdfIn PDF document text
    • https://kaptenhoki.org/contents/files/68750312332.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/juvazimoki.pdfIn PDF document text
    • http://dolekkoyum.com/admin/UserFiles/file/gomobawidisumazepib.pdfIn PDF document text
    • https://www.andreivieru.com/ckfinder/userfiles/files/93118708570.pdfIn PDF document text
    • http://tc-antey.ru/uploads/files/52472074477.pdfIn PDF document text
    • https://mywayrtk.com/userfiles/file/dubejurudakilizikol.pdfIn PDF document text
    • https://tenshinorchids.com/FCKeditor_upload/file/newovedujewonepa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=dragon+city+hack+unlimited+money+and+gemsPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAB 17968 bytes
SHA-256: e75004c1d4b6d386be82d17fe97b85e30f1859e3d25296ef1e0572234036400a
font_01_sfnt_off00011a29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A29 11124 bytes
SHA-256: 14db1e6a9f2e5c3cecae6692e72713949abcab0668d5310dee66bfa1ac9ae8b4
font_02_sfnt_off000133c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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