Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6786842be01a29f…

MALICIOUS

PDF

71.3 KB Created: 2021-09-15 14:34:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 04ef25c9b9cc184a9116b361e82fcbe4 SHA-1: fa871978658988c1e9f43412bcd0de21052f7bcf SHA-256: e6786842be01a29fbdf3e2066298494c1e0c97de0e390c48e1dbacc8aa9cc82f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing or trojan distribution. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates a non-clustered link farm on disposable hosting, reinforcing the phishing lure. The presence of external URIs further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 https://garglob.ru/uplcv?utm_term=among+us+mod+menu+no+ban+apk+download PDF link annotation
    • http://corporatiegids.nl/uploads/files/51922148526.pdfIn PDF document text
    • http://hyunshin.net/userfiles/file/20748992064.pdfIn PDF document text
    • http://zangerlelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kotuxokuwuvujiketilo.pdfIn PDF document text
    • https://fzclicks.com/demo/files/editor/file/91437686329.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16140533a12dac---80018208650.pdfIn PDF document text
    • http://ducnhua.com/upload/files/9443880641.pdfIn PDF document text
    • https://f2h63c2.ip4secure.net/upload/files/94596938171.pdfIn PDF document text
    • http://kdekdyjak.cz/data/5522368233.pdfIn PDF document text
    • http://spzpoz-zdunskawola.pl/upload/file/33845001133.pdfIn PDF document text
    • http://noithatmfc.com/media/ftp/file/tafoduvaduwunolimebik.pdfIn PDF document text
    • http://drsrkbedcollege.com/ckeditor/ckfinder/userfiles/files/39640565603.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210907105059143.pdfIn PDF document text
    • http://nuuts.mn/uploads/assets/nilupa.pdfIn PDF document text
    • http://lindseyderence.com/userfiles/files/44147984373.pdfIn PDF document text
    • https://www.totspotdaynursery.co.uk/ckfinder/userfiles/files/82122934525.pdfIn PDF document text
    • http://poptheme.cn/uploadfile/files/20210913_223419.pdfIn PDF document text
    • https://valerart.com/ckfinder/userfiles/files/69978287864.pdfIn PDF document text
    • http://0048.pl/48files/file/84649590933.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/72167870517.pdfIn PDF document text
    • http://theponghop.com/upload/files/54086326111.pdfIn PDF document text
    • http://somersetcountybar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jubovobifajoseke.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/ba45385472f3dc998b60d4d936bb05bd/82067508772.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_off0000b430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB430 10844 bytes
SHA-256: 026abe469de5cdb24cedb533ea2212c0c76516fd10a9ab80e7f2ddf3c44e002c
font_01_sfnt_off0000cce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F6 16464 bytes
SHA-256: e86bfa2663baa990309b1df4d6d27785dd58ab2f06b98d979f8dfbd73ede314a

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