Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d029be693455f91…

MALICIOUS

PDF

85.9 KB Created: 2021-09-08 13:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 9f17275bad81ed35c7b97d7c83e64c61 SHA-1: 18766f63fbdc7fe582f92e348439b46a0bc87eda SHA-256: 0d029be693455f919a6ee7724586386cceb37dd94540d9d9856ec3a69ff74b74
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external links, many of which are on disposable domains, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely serves to obfuscate the malicious links or initiate further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • 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://queure.ru/uplcv?utm_term=fiqih+imam+syafi%27i+pdf+terjemah PDF link annotation
    • https://olympicwroclaw.pl/zdjecia/fck/file/77501442979.pdfIn PDF document text
    • https://bongkartuantakur.com/contents/files/72557766796.pdfIn PDF document text
    • http://hefei.chinatupai.com/web/js/ckfinder/userfiles/files/rutifuseduxumifuses.pdfIn PDF document text
    • http://acelybio.com/upload/files/viduborafojedogiwazafab.pdfIn PDF document text
    • http://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/kupeloxafewaloxuku.pdfIn PDF document text
    • http://temple.mo/userfiles/file/zidisuxaferujej.pdfIn PDF document text
    • https://airshow-bg.com/file/lututatopinasej.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/71808923188.pdfIn PDF document text
    • http://chistogood.ru/admin/ckfinder/userfiles/files/dufesatewezuv.pdfIn PDF document text
    • http://cl-metalparts.com/d/files/sekewobebudovit.pdfIn PDF document text
    • http://alliance-ic.ru/uploads/file/bexowo.pdfIn PDF document text
    • http://graphicyazd.com/ckfinder/userfiles/files/dutibapiguxejepatusolidig.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161338acc32603---xutasuwa.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/3b395d8ca13cb02d8605d732c056959e/fodusew.pdfIn PDF document text
    • https://seedomoretravel.com/files/files/56899651884.pdfIn PDF document text
    • http://sendedianqi.com/upload_fck/file/2021-9-6/20210906235302102997.pdfIn PDF document text
    • http://gurukripapublicschool.com/userfiles/file/vosebanat.pdfIn PDF document text
    • https://groupburuemas2.com/contents/files/sixijapodekapulu.pdfIn PDF document text
    • http://anapharmata.hu/ckfinder/core/connector/php/files/95897515032.pdfIn PDF document text
    • https://ubk-sad.de/azubi/userfiles/files/rumizosamezizew.pdfIn PDF document text
    • http://bwc.lt/i/42742952825.pdfIn PDF document text
    • http://studiocariola.com/userfiles/files/97652256732.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_off0000e66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66F 10896 bytes
SHA-256: 844ba629081171839c24b7d11f042c9996d8a2f557fb7aa09cc7f9e8935acbbe
font_01_sfnt_off0000ff72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11784 19344 bytes
SHA-256: 1795c1ca4c315ccaf60e2f10c33838cc9e2b6e8e1bda43fc00a8b3b015667978

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