Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74bcff0ee892391…

MALICIOUS

PDF

70.9 KB Created: 2021-02-20 20:32:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4b9c0c93e6865d06921e4a0f000e5fb6 SHA-1: 043151e3f6ad6b59057fdad536447a03119aae9f SHA-256: f74bcff0ee892391d4d88cc5db78728c2f95b13d1a8df1effe2a12e7546e3dae
262 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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
  • 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://crophysi.ru/wix?keyword=learning+to+see+pdf In PDF document text
    • https://widewosum.weebly.com/uploads/1/3/0/7/130775244/fumut-joxeve-zisexadek-kusebavejoni.pdfIn PDF document text
    • http://navizuvexax.iblogger.org/wacom_intuos_pro_medium_pth-651_price.pdfIn PDF document text
    • http://masito.space/juluvad6phi3.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/jie6ha2/as_name_status_video_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/hge2ifx/arctic_wolf_3660_suite_review.pdfIn PDF document text
    • http://netzamka.ru/mesobuwakezizaxajip46ty.pdfIn PDF document text
    • https://lifexusubanipi.weebly.com/uploads/1/3/4/3/134377686/mezudoferoniteni.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/taridib/jodetubufizo.pdfIn PDF document text
    • https://cdn.sqhk.co/daborofus/ihUgd82/bigarojeregifap.pdfIn PDF document text
    • http://megahit.space/chasseurs_alpins_uniformpzlrp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/natakam_telugu_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/16129009582.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/amelita_rae.pdfIn PDF document text
    • http://xipudabokodem.epizy.com/how_to_start_modeling_in_blender.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/security_incident_response_team_template.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_off0000daa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA1 5116 bytes
SHA-256: 535fe78fe68cb3158537d8e897e7dfb9615f6dc5a6c7cfe43cf1e1eee7518871
font_01_sfnt_off0000ec1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1C 10220 bytes
SHA-256: 04d06a84d9e3acc86b02ed9c8a345feae6195c1003fa1e65542338f35cfc56ae

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