Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b274fdbb559e52…

MALICIOUS

PDF

68.5 KB Created: 2021-02-14 05:32:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ea4b91f3227c4d63c7d399890ef7645d SHA-1: d7cc9a7319bc77b1ed811e7f3a71c263a16263b0 SHA-256: 88b274fdbb559e52b912a8bb5779082a1fa6575624a70e303a0a8a2f8c9dc438
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://seumenha.ru/wix?keyword=my+horse+stories+cheats PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496853/normal_5fedee39a98c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388279/normal_5fc99627dfbbc.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/idieUiT/graphic_design_software_for_free.pdfIn PDF document text
    • http://fitokapss.xyz/21972554225cipzv.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/iifXjcQ/et_music_player_pro_4pda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447276/normal_5fd63467b70a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365636/normal_5fef7ff5c0b2c.pdfIn PDF document text
    • https://cdn.sqhk.co/kisereta/geQOico/microsoft_teams_meeting_recording_location.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375704/normal_60260d82dd726.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5fd6476a2c780.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://popeganezawojeg.rf.gd/android_tv_smart_tv_samsung.pdfIn PDF document text
    • http://bepenaguvofiw.epizy.com/domiwusapoveguwa.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_off0000d181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD181 4964 bytes
SHA-256: 990ae02190e1f7d25856a7879e715ce8ad8fbda8468b5eb89898e048e9e773db
font_01_sfnt_off0000e270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE270 10172 bytes
SHA-256: cb72afa20abee09536506f8b9861894d6cc2bf1077568d3b40aa254c30f63337