Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f1f920ee0430b9…

MALICIOUS

PDF

69.1 KB Created: 2021-02-21 16:55:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 706010f10f3d3b888c63bd9d477dd57d SHA-1: b85421dadca8b9a0ad3fc44a0975862f9b1ae0f4 SHA-256: 68f1f920ee0430b9f3f72da2f1510ac42ace1ec74a6ff33f990dbcac038b9497
196 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
  • 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.
  • 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/wix?keyword=hydrolatum+hydrated+petrolatum+cream PDF link annotation
    • http://gitilapen.66ghz.com/tobiriguwakovegaxe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377115/normal_5fee532ed2d7b.pdfIn PDF document text
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/tonubuja.pdfIn PDF document text
    • https://cdn.sqhk.co/rowubuvuke/i6iba5v/nova_launcher_6._1_pro_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/eJxajjf/clouds_movie_song_mp3_free_download.pdfIn PDF document text
    • https://dopakujovifoba.weebly.com/uploads/1/3/0/7/130739833/kajavuveborep.pdfIn PDF document text
    • http://rarinokuxe.iblogger.org/free_downloadable_quick_study_guides.pdfIn PDF document text
    • https://setixifofu.weebly.com/uploads/1/3/1/6/131606861/9c3b3cb4f44c11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451566/normal_60270988f1b23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411480/normal_6019368c66711.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/wuvepilamamuse/12417318769.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/99637597321.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/kudefuvanakejanuvikit.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/faxasugewalizelobad.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/sudotapedi.pdfIn PDF document text
    • http://fesenobonirizu.epizy.com/android_tv_box_apps_to_watch_movies.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_off0000d0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EA 5196 bytes
SHA-256: 945648120dcf640583bb544750179c1ee57f69a964e3c4255ce77f916303d43c
font_01_sfnt_off0000e26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26E 11364 bytes
SHA-256: a952bcf5d57ac6e58530de25b2e98deafdadc45e501cf7a4c6378c03921cf884