Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e81d962f4e605b…

MALICIOUS

PDF

70.9 KB Created: 2021-10-05 14:37:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 879c91f6f80db10ce4c645aa99c22f3d SHA-1: 9918adbe047f158caa58ecdde34eb3071b58f00f SHA-256: 69e81d962f4e605bdad9df32b87d4732d7e61aec479709d6f47d8d0f85419dab
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF contains numerous links pointing to disposable hosting, suggesting a phishing or malware distribution campaign. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://crysiq.ru/uplcv?utm_term=esters+and+solvents+llp PDF link annotation
    • http://euromarkcreations.com/new/fck_img/file/24337710627.pdfIn PDF document text
    • http://bangtutrang.com/upload/files/fenuwejuxevekozumaxe.pdfIn PDF document text
    • http://canissapiens.com/images/uploads/file/sezokamegifiziletixuf.pdfIn PDF document text
    • http://abpjseah.news-read.com/upload/files/43623136570.pdfIn PDF document text
    • http://shyjjc.com/v15/Upload/file/20219201646294345.pdfIn PDF document text
    • http://world-spa-resorts.com/dok/sogavivofajapufiz.pdfIn PDF document text
    • http://msnladyboy.com/ckfinder/userfiles/files/55856907829.pdfIn PDF document text
    • https://perfecthospitals.com/FCKeditor/file/soxiwegezuguwesozifobilop.pdfIn PDF document text
    • http://lunaleo.pl/userfiles/file/60130542046.pdfIn PDF document text
    • https://conexusinternational.com/ckfinder/userfiles/file/92433483859.pdfIn PDF document text
    • https://ismart99.net/upload/files/texokaj.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/badunuvotu.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/28520612987.pdfIn PDF document text
    • http://portalinmobiliario24.com/uploades/fckeditorfile/44201295690.pdfIn PDF document text
    • https://repare-ton-smartphone.com/userfiles/file/19508427599.pdfIn PDF document text
    • https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/6730745585.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16141ec3e24856---sosupogodululexusijidi.pdfIn PDF document text
    • https://austarpharma.com/upload/files/631279977.pdfIn PDF document text
    • http://dailitara.lt/bites/uploads/file/46406265094.pdfIn PDF document text
    • http://laureysnv.be/uploads/files/55048735132.pdfIn PDF document text
    • http://ydtmuhendislik.com/ckfinder/userfiles/files/79289357807.pdfIn PDF document text
    • https://fullhousetourism.com/UploadFiles/file/20210923212849170.pdfIn PDF document text
    • https://dsverano.com/UserFiles/File/51045396080.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_off0000b692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB692 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA9 10344 bytes
SHA-256: 7abbc7b4fe8cce88d8684722e86216ec9f8df8943c36a3222135bbec28a3a050
font_02_sfnt_off0000e626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE626 15688 bytes
SHA-256: 8d257f55d666b26d11b367998ee3f185ddfe031c0e0c7264d320bcb123951ea9

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