Malicious PDF — malware analysis report

Static analysis result for SHA-256 369ece9473777055…

MALICIOUS

PDF

72.9 KB Created: 2021-02-23 14:36:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5ab722c88aabb75ff40d85ff3fee7a23 SHA-1: 65e0c38dd3904bbcf1169f780e57f83ca6e7a366 SHA-256: 369ece947377705592ec44003a5137bd132549df2d8876bedc972168719d5796
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://yafferge.ru/wix?keyword=fox+run+mall+portsmouth+nh In PDF document text
    • https://wububored.weebly.com/uploads/1/3/4/0/134042895/nazuxe_gatovam_gadumuju.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/ruparotemijitaxegadi.pdfIn PDF document text
    • https://rosotomana.weebly.com/uploads/1/3/4/5/134585450/kinodosiso.pdfIn PDF document text
    • http://kupuzuzopojesu.22web.org/air_supply_songs_list.pdfIn PDF document text
    • https://fafetomipisiso.weebly.com/uploads/1/3/4/6/134603542/riduxojex.pdfIn PDF document text
    • https://pusetuliv.weebly.com/uploads/1/3/1/6/131607438/9102560.pdfIn PDF document text
    • https://cdn.sqhk.co/wubumeze/jh5Ghem/mermaids_1990_full_movie_123movies.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/zosevid/kufokaxoru.pdfIn PDF document text
    • http://vininotubosom.epizy.com/agri_logo_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/36685173654.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/seliguzokejigekev.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/blur_background_photo_editor_app.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/tokyo_drift_song_masstamilan.pdfIn PDF document text
    • http://dususawikupap.epizy.com/el_resumen_del_cuento_los_crimenes_de_la_calle_morgue.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/36228269719.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_off0000e00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00E 5084 bytes
SHA-256: 2ba6952b1c9e244809b3eaa20c185b247f68ce17a43b2f8e8cce94321df69292
font_01_sfnt_off0000f12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12A 11016 bytes
SHA-256: defa30e21043c09f2d61fbf363912f6d8685516fcd46ca7a00efe5f91df4da31

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