Malicious PDF — malware analysis report

Static analysis result for SHA-256 de14db9f8feec1b1…

MALICIOUS

PDF

68.5 KB Created: 2021-02-13 15:35:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cf93828a20e71dc440e0dd44aba17e8a SHA-1: 201e1e5bcbaedd41b273a551fefd3dce7667c18d SHA-256: de14db9f8feec1b1848d830f3adf3a00b515d65d65587b6b8e8f93af197a9b93
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to 'leonvi.ru', suggesting a phishing or redirection attempt. The PDF's structure and embedded content indicate it's designed to exploit users by presenting a seemingly innocuous question to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=is+white+a+warm+or+cool+color PDF link annotation
    • https://cdn.sqhk.co/ruduligived/jfifZjb/faxasixoxadorosemiz.pdfIn PDF document text
    • http://ourfutures.space/gitasesilujojagivegokojotdai.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/LOhcxjc/minecraft_pixel_art_templates_easy.pdfIn PDF document text
    • http://reduslimitalia.site/47264987289ca2kw.pdfIn PDF document text
    • http://pc-remont.website/communicate_what_you_mean_answer_keyc02dt.pdfIn PDF document text
    • https://cdn.sqhk.co/posaleren/ihhiVog/memoji_stickers_for_whatsapp_apple_wastickerapps._com.pdfIn PDF document text
    • http://bestsaleshopin.xyz/2005_chrysler_pt_cruiser_service_manualmefn8.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/Q8Iwkji/hunt_bears_in_dens.pdfIn PDF document text
    • http://gsmall.space/chrysler_voyager_user_manual3e8gl.pdfIn PDF document text
    • http://aromaita.space/orton_gillingham_lesson_plan_templateh12sj.pdfIn PDF document text
    • http://alexandreablog.com/higo_nombre_cientificovzsau.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaxuvixefekan.epizy.com/munuxamogebok.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/the_avalanches_because_i_m_me_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/tegunupixumizorawotudatif.pdfIn PDF document text
    • http://xesepodine.rf.gd/tamavovedaterike.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF16 5068 bytes
SHA-256: a576e9ea231f07c2ac80e2231882613508acc1522590e2c27ee2da3508cdaf7e
font_01_sfnt_off0000e03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03A 10804 bytes
SHA-256: c37c78aba37b3f3177a0480d1912390ccfcc5847f30f6be59a743dd4360f4fea

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