Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dc90fca497c0241…

MALICIOUS

PDF

73.2 KB Created: 2021-02-03 06:45:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3daa005d1a768ffc64825455dc41f467 SHA-1: 462175ed0b0c4a68d06dd785da5d2e0d5775fc14 SHA-256: 2dc90fca497c0241939b8c1017c86d81c741281eb688fbd2e4442df9df9b47fb
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://druttle.ru/wb?keyword=statement%20of%20confidentiality%20for%20fax%20cover%20sheet PDF link annotation
    • http://dagomakiluje.iblogger.org/14859189022.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fdb6e6dec1da.pdfIn PDF document text
    • https://cdn.sqhk.co/xafemepino/qIOgikr/g_switch_2_unblocked_silver_games.pdfIn PDF document text
    • http://udilische.club/vermintide_2_executioner_sword_guide9he7z.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/ePd8fja/hokey_pokey_youtube_baby_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410020/normal_6013cb87d7e68.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://masusekokuberex.rf.gd/48754423105.pdfIn PDF document text
    • http://buvinisupolo.rf.gd/psp_games_for_android_2019.pdfIn PDF document text
    • http://runoxujozu.rf.gd/26485491712.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/gubepegunokewejejezexete.pdfIn PDF document text
    • http://nopuzowisaw.rf.gd/formal_dresses_for_12_year_olds_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/wigejizajefezikimemewek.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/dixelixabavosoxusodowuxi.pdfIn PDF document text
    • http://retexibew.rf.gd/find_the_camel_alzheimer_s_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/pittsburgh_steelers_schedule_2018.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_off0000e080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE080 5596 bytes
SHA-256: 6a27dab814fabd1a07d14eb6f190dcdeabfc588903dcd393f16254ce68330102
font_01_sfnt_off0000f371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF371 10560 bytes
SHA-256: 741aeccd65c3f4c1f39b678b954a73269dd80180448711f6f385df3a8839c9b6