Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa811e7c4912532…

MALICIOUS

PDF

69.2 KB Created: 2021-02-19 13:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9e522ef4a3d6e1c8cf77265955b53f7d SHA-1: 6ca21621ec589ab8aa1c3019b9239b85a709cb43 SHA-256: daa811e7c4912532f8d1c05f5a6fcb055b1c7a3f77da30184cccb650f17718bb
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=defiant+outdoor+lighting+manual PDF link annotation
    • https://cdn.sqhk.co/letojeka/gIXgfih/didi_n_friends_lagu_baru_2018.pdfIn PDF document text
    • http://topepuxabi.iblogger.org/godfather_theme_violin_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/xamozafi/sMN7hgc/all_language_translator_free_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480414/normal_5fd0f50f8084e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479710/normal_5fe4a767e3654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413370/normal_6009c5a6c9b50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497666/normal_601fd5758a6c6.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/remuv/tu_jemiti_bhangi_delu_remix_song.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/4843932562.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/centralia_il_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/73674566007.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/tekogasefobugimugawinof.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/34090000919.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC855 5144 bytes
SHA-256: 5e5d87c13f304170584d1fa7a151898d30a7ebc5a0deca1a7c550e44d7cb6d82
font_01_sfnt_off0000d9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AA 2256 bytes
SHA-256: 9fa9b0198463408d388ec4a6dd7773ba3c303fa7497fea848f2257255c2e489b
font_02_sfnt_off0000e368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE368 10632 bytes
SHA-256: 80d6b0380a3b8d87412bfcf86ea060596868060b8788d26efb00fc46e97e151d

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