Malicious PDF — malware analysis report

Static analysis result for SHA-256 804e4b5f2cc6754e…

MALICIOUS

PDF

72.5 KB Created: 2021-03-03 00:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 612df0700c10cc654234c665b033d17b SHA-1: 0866aac5d9db846a2aa411b2c3b71599fc56d8bf SHA-256: 804e4b5f2cc6754ed145c6f3475283e978618d06232012ad1459733414281fb7
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://jottigo.ru/award?keyword=how+accurate+is+fitbit+charge+3+calories PDF link annotation
    • http://koxelovanalimu.getenjoyment.net/lunisevajadu.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/what_are_jobs_daughters_names.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_5fe89133e3409.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455198/normal_5fd84a66a9fdf.pdfIn PDF document text
    • http://juwoniki.getenjoyment.net/wishful_drinking_lyrics_tessa_violet_meaning.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/75965791273.pdfIn PDF document text
    • http://wozoxudo.iblogger.org/adobe_reader_2018_for_windows_7.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/gakilelesemames.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446776/normal_601fc566a21b8.pdfIn PDF document text
    • http://kulibakux.iblogger.org/how_to_get_rid_of_a_callus_under_my_foot.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/fezenur/zombie_catchers_hack_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/golelalonefap.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/semerudetomapi.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/mudexegid.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/83489958565.pdfIn PDF document text
    • http://rotalewisiv.epizy.com/2342064163.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/sabbatical_leave_report_sample.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_off0000de25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE25 5500 bytes
SHA-256: 09119cf3ad8a2f887db9c14549bd0a0ca65d3d55fd7bc7768712c4c5efb0b524
font_01_sfnt_off0000f0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EB 10412 bytes
SHA-256: 80729690be7b1a2c55fa425f10d441ea19a16546765bdef5aadd4727042d2c1d