Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b05c057210617b5…

MALICIOUS

PDF

65.5 KB Created: 2021-02-19 14:39:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f14393dcb028eecab756c02003983b21 SHA-1: 87f76e151815b42997f93cc574e9da06f4c5c634 SHA-256: 2b05c057210617b50b25ed1e7cd0f44266d7b09813c9306ec9f6f3cfb03a4907
136 Risk Score

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
  • 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://maypoin.ru/wb?keyword=data%20structures%20through%20c%20in%20depth%20by%20sk%20srivastava%20pdf%20download PDF link annotation
    • https://cdn.sqhk.co/ninubisidire/ZAHS1uI/bike_love_couple_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/gdSXijo/ice_cream_close_to_me_now.pdfIn PDF document text
    • https://cdn.sqhk.co/tibapopedeka/fjcijYM/bike_unchained_2_hacks.pdfIn PDF document text
    • https://cdn.sqhk.co/dojagomudek/adhHKfY/xaxajepen.pdfIn PDF document text
    • https://cdn.sqhk.co/rujoremebi/ahq4bYi/my_little_pony_princess_twilight_sparkle_toy_commercial.pdfIn PDF document text
    • https://cdn.sqhk.co/nitumatemi/jcQhejd/47290750457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461744/normal_6014e4c7c23b1.pdfIn PDF document text
    • https://cdn.sqhk.co/tosilura/jhijhQK/ximetesedukogesi.pdfIn PDF document text
    • https://cdn.sqhk.co/konanetufuda/umgjaij/funny_male_names_starting_with_c.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/serogajugomiji/assoluto_racing_mod_apk_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/wakepa.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/61463366144.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/offline_english_arabic_dictionary_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/married_couple_couples_therapy_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/ginomigufa.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_off0000c436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC436 5872 bytes
SHA-256: 1aa914b32ca05121b58c96f9b9b536939aceefdbd7de02eeaf92b9fb9cd438cd
font_01_sfnt_off0000d84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84C 9452 bytes
SHA-256: 42ecfb7ec9001c7aae01b7d702fbdb983b16454394b328b02c4d7adb91708ffa