Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d749dac9332a6e0…

MALICIOUS

PDF

86.1 KB Created: 2021-02-07 16:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e78a616dc782303f7f4d4e5c0289d45d SHA-1: f50602a28735221d7578463e926af786206b66e8 SHA-256: 7d749dac9332a6e07d00a2237b1a6292e140a6970bc678c691546830000b4145
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=verbal%20warning%20letter%20for%20poor%20performance PDF link annotation
    • http://catsism.com/anet_a8_configuration._hf18ln.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370080/normal_5fe0efcb2e9d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412391/normal_60151e1d6416c.pdfIn PDF document text
    • http://clobuss.ru/zulovenot6166v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403270/normal_5ffe0df7688f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383460/normal_6001f46203a19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462374/normal_5fe344d43dac7.pdfIn PDF document text
    • http://mnogoturov.com/but_how_do_it_know_book_free_downloadvkg4z.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/wupiwupiwot/ghost_whisperer_2009_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/annadata_movie_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/xatasiboxonizafel.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/michelin_guide_restaurants_mexico_city.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/ralewovarizulivufiwawufot.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/list_of_indian_airport.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/trinet_login_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/culturing_bacteria_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/29657971238.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/multiplication_and_division_worksheets_grade_2.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_off00010bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB5 5356 bytes
SHA-256: 3c1ae0bb43cd39b320ad98b0bf6e1a114430e0b8ee2d7951f7e3be8efdae5257
font_01_sfnt_off00011df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF5 14328 bytes
SHA-256: 712a48834c7a630fc9d3983fbcd0e428c12d96b76f759f18978e2b0481d526a8

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