Malicious PDF — malware analysis report

Static analysis result for SHA-256 621f1f4562546c6a…

MALICIOUS

PDF

77.6 KB Created: 2021-02-18 19:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 71dd541048bb81a21082694b477fe07f SHA-1: 825cfa5566094209233a9ec44987fc079d723f75 SHA-256: 621f1f4562546c6aa0eef5a2cb9ac5b0c4ac8bb1f2a952d4aff47de70e6fe357
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://jottigo.ru/123?utm_term=atx+power+supply+tester+circuit+diagram PDF link annotation
    • https://cdn.sqhk.co/zibomevuguli/gjShRhj/agent_z_and_the_penguin_from_mars.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/jawjdib/giguwisuzo.pdfIn PDF document text
    • http://importants.space/chromecast_built-_in_apk_mirrorfkb4x.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/gcLxgja/bad_day_daniel_powter_chords_piano.pdfIn PDF document text
    • http://edarudost.online/zubalabifix63s7.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/igghhj0/yellow_gameboy_advance.pdfIn PDF document text
    • https://cdn.sqhk.co/pitadewedobu/ggdggij/bus_hill_driving_game_download.pdfIn PDF document text
    • http://republvinb.fun/jijewopesaburegapagigwgxv2.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/jNcgdG6/can_among_us_play_on_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/wumigapinido/cibYFif/xunugowewewanazaxif.pdfIn PDF document text
    • https://cdn.sqhk.co/rorazelesu/jif8AQf/pitowumuk.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/ibhcMMu/wuvezodizimelonelokoj.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/wefemabeni/vosum.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/93022768398.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/kubavukoselijibo.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_off0000ef16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF16 5644 bytes
SHA-256: ffd966851ba46377094406c18de2331ca791dd0de403e14f7984baecfe16b4ca
font_01_sfnt_off0001025d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025D 10876 bytes
SHA-256: 1186510cb456f9bcc24d50cb20f7a7382658894487637a442d694e9d59a49566