Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e6a5446a581564…

MALICIOUS

PDF

68.0 KB Created: 2021-09-25 19:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 134ec640afb259820af763bba2519f6d SHA-1: 1dc508d50da78757d14f6b14020e113f384938be SHA-256: 95e6a5446a5815645aa2d688573b6ff4e6ac6a7370bb4e99d19488962250a630
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable links. Multiple heuristics indicate it functions as a link farm, directing users to various domains, some of which appear to be compromised. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ketchas.ru/uplcv?utm_term=index+of+shameless+season+4 PDF link annotation
    • https://deesudcoolingtower.com/userfiles/file/69433857731.pdfIn PDF document text
    • https://greenlandpark.com/uploads/files/vibukozeka.pdfIn PDF document text
    • http://apartamentykunickiego.pl/architekci/public/upload/ckfinder/userfiles/files/14901387839.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/b918d6182f3c3c7e3fb9048859be7ddb/93952152817.pdfIn PDF document text
    • http://bocghedanang.com/media/ftp/file/99089728843.pdfIn PDF document text
    • https://auditorescr.com/ckfinder/userfiles/files/9250258930.pdfIn PDF document text
    • http://kaus21.com/userData/board/file/sumupivusomusawiga.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/qvrrd2l1hbsltsu43s516moe4f/wodadin.pdfIn PDF document text
    • http://ohsongpharm.com/ckfinder/userfiles/files/rogumazalokor.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/gexajojimez.pdfIn PDF document text
    • http://biurod9.pl/public/userfiles/file/56476842487.pdfIn PDF document text
    • https://stiff.pl/ckfinder/userfiles/files/60716473729.pdfIn PDF document text
    • http://wittymall.com/multimedia/userfiles/file/6525898270.pdfIn PDF document text
    • https://mbzl-pro.xyz/web/img/podborky/files/22161442181.pdfIn PDF document text
    • https://yp05.com/_UploadFile/Images/file/40507014103.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16144939fce141---tozemari.pdfIn PDF document text
    • https://fuoriscena.eu/file/remubek.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613238277bc38---dolodepiladesezi.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/5kpi2ckf7k1969r3g57ta1vpb7/muwafuwugitivulurufon.pdfIn PDF document text
    • https://cissud.com/uploads/ck_editor/files/xevasirowaluwutasizefizuv.pdfIn PDF document text
    • https://unitytradecapital.com/ckfinder/userfiles/files/motijanezetozuxi.pdfIn PDF document text
    • http://mega-gold.com/userfiles/files/12924332855.pdfIn PDF document text
    • http://apex-architect.ru/images/file/bizofuvevubedinesevu.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_off0000adc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADC8 14320 bytes
SHA-256: 5caed12c955051f57ced57ff5faf1a7a18b1e5c6b6880474e2b5993f0e839677
font_01_sfnt_off0000d155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD155 10460 bytes
SHA-256: 338d127aa13f34ee96929a619c11082fd4c95b13e387418eb4fe7cf991500cbf
font_02_sfnt_off0000e8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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