Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0223bab0cd73271…

MALICIOUS

PDF

84.7 KB Created: 2021-09-13 07:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1887f8bbd47b5f4a981cf7c8126ddc95 SHA-1: 46b9308fac8e6d283b717adf9b10694ca6dd3a46 SHA-256: f0223bab0cd7327181483f1ac1d07f9f5eaf91437fb1262eb629542a24bbc10b
164 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of a 'download' button lure reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://smidgel.ru/uplcv?utm_term=harry+potter+and+the+prisoner+of+azkaban+streaming+free PDF link annotation
    • https://yumasri.com/assets/ckfinder/userfiles/files/60872191479.pdfIn PDF document text
    • https://treasurehunterdetectors.com/ckfinder/userfiles/files/99876802112.pdfIn PDF document text
    • http://thelonerangerfanclub.com/ckfinder/userfiles/files/kesatifovinarupemofoketu.pdfIn PDF document text
    • https://tylbm.com/Upload/ckeditor/files/52599585005.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/56183345302.pdfIn PDF document text
    • http://cp-tournament.org/ckfinder/userfiles/files/vakewejebodasos.pdfIn PDF document text
    • http://coral-travel66.ru/admin/ckfinder/userfiles/files/figofirilewatabefuwatenu.pdfIn PDF document text
    • http://kondicionery-shodnya.ru/upload_picture/file/gifefisuritoretej.pdfIn PDF document text
    • http://ck-kutnahora.cz/gais/image/file/99018536571.pdfIn PDF document text
    • http://geoplan.su/userfiles/file/86686238675.pdfIn PDF document text
    • https://acryl-bg.com/userfiles/file/8800050037.pdfIn PDF document text
    • https://smartcrm.cloud/upload/files/gomukerova.pdfIn PDF document text
    • https://dbjadow.pl/attachments/file/buwamafud.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210909185922823.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132e2d26e5ec---sotikazadarixufuzi.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/npdsiobfufkaph65gtuu9toar0/98036441697.pdfIn PDF document text
    • https://beauti-full.ru/uploads/files/49643968128.pdfIn PDF document text
    • http://studioscoponi.eu/userfiles/files/12576270559.pdfIn PDF document text
    • http://tuanlongland.com/upload/files/gesijarejuxipaxipidejilim.pdfIn PDF document text
    • https://alsharqcc.com/userfiles/files/99109024538.pdfIn PDF document text
    • https://washlounge.in/ckfinder/userfiles/files/jipiti.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139fa7f73b4f---bewisufixuz.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_off0000ddc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC0 11296 bytes
SHA-256: 01b64f19f7e87276dd68ac4f54f8b5b14e400836f80694bbf16d8e96794d5574
font_01_sfnt_off0000f7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC3 19736 bytes
SHA-256: 9067611e072099be4124573446afff45d1ad4fc9f89184bd054c0ba17f18ab5f

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