Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb54386c10dbd1ac…

MALICIOUS

PDF

76.7 KB Created: 2021-09-08 18:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: c9bed6d635da9149392f0ddfa8415df8 SHA-1: cdf0dc1662773e33c9dd76e56c6432c3296ee743 SHA-256: eb54386c10dbd1acc788c9bf1a12d3932b8817b7b9c6938a29b63833543455d1
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 0.9948

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 http://yanarfabrics.com/firma/files/daboforurukereravagaziz.pdf In PDF document text
    • https://atputasbaze.lv/images/userfiles/files/91533516192.pdfIn PDF document text
    • https://sintasyapi.com/img/userfiles/file/85121696150.pdfIn PDF document text
    • https://amgaa.org/temp/files/69389414791.pdfIn PDF document text
    • http://poultech.net/d/files/39382107924.pdfIn PDF document text
    • http://vattuxaydunghl.com/userfiles/file/nitulojum.pdfIn PDF document text
    • http://dkind.net/userData/board/file/zamivosimotupadoxaxop.pdfIn PDF document text
    • http://acelybio.com/upload/files/zesalejuxariz.pdfIn PDF document text
    • http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/suzuzefoguzupajuziri.pdfIn PDF document text
    • https://pragatitic.org/ckfinder/userfiles/files/76825219592.pdfIn PDF document text
    • http://thebankcardservices.com/uploads/files/venakogelexutulomebova.pdfIn PDF document text
    • https://chp-travel.ir/data/file/jiwezejajare.pdfIn PDF document text
    • http://tylincms.com/userfiles/files/31300910109.pdfIn PDF document text
    • https://5a.ro/ckfinder/userfiles/files/50619822976.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/3012a9ad1d1502f9c719f20f9808aaf9/6565025354.pdfIn PDF document text
    • http://pattarasawat.com/ckfinder/userfiles/files/putebilixifufowazelutow.pdfIn PDF document text
    • http://hcm-invoice.vn/hinhanh_fckeditor/file/79905612491.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/dugapewe.pdfIn PDF document text
    • http://sobateracota.ro/mm/file/zonoluputezaj.pdfIn PDF document text
    • http://compsult.net/userfiles/file/72477317500.pdfIn PDF document text
    • https://www.igescanada.com/ckfinder/userfiles/files/zilipoxapovunedelakuzika.pdfIn PDF document text
    • http://premiumcsp.com/uploads/files/35389695219.pdfIn PDF document text
    • http://ngoinvest.com/uploads/ckfinder/files/desigebozotawowupugas.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/kofatopul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=compressor+de+pdf+downloadPDF 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_off0000c519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC519 18092 bytes
SHA-256: 721a3aa76a3c65cf137a311358d097d3ebc786d33be1232f0611a271deb99a8f
font_01_sfnt_off0000f39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39C 10584 bytes
SHA-256: ce22668f041829b8258fd9549b5e38b8f0c7abe3d084a49b96f4fe195a9d6981
font_02_sfnt_off00010bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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