Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5eeb5f06f8759a1…

MALICIOUS

PDF

71.5 KB Created: 2021-01-22 20:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dd82e15c0a5fd0123da4dfc175335d8e SHA-1: e5a800308b59fe72bafebb73b4ecdd92b63f24f5 SHA-256: f5eeb5f06f8759a1ed3dd258122d37d948ca2e917f307989e96edca05fc515db
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/123?utm_term=seamless+bible+study+reviews PDF link annotation
    • https://fodolirikixubug.weebly.com/uploads/1/3/5/2/135297927/vimozuvaxexafozuxij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501495/normal_5fefd55ccebc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412757/normal_600a0851cb9b2.pdfIn PDF document text
    • https://pisubamu.weebly.com/uploads/1/3/0/7/130740412/4703616.pdfIn PDF document text
    • https://site-1177739.mozfiles.com/files/1177739/american_civil_war_gettysburg_game_download.pdfIn PDF document text
    • https://zezebeburopixem.weebly.com/uploads/1/3/5/3/135326834/xenukara-setifoxebafab-lawukokek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391903/normal_5fc9ac6b8d5bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421478/normal_5fe72fab6e441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460251/normal_5fd3150b61093.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370063/normal_5fe1c6ddb7946.pdfIn PDF document text
    • https://site-1174259.mozfiles.com/files/1174259/blank_roman_numeral_clock_worksheet.pdfIn PDF document text
    • https://pomonomiwubexi.weebly.com/uploads/1/3/2/3/132302815/xawugemud.pdfIn PDF document text
    • https://site-1247868.mozfiles.com/files/1247868/ekonomiks_teaching_guide_part_5.pdfIn PDF document text
    • https://xawavefite.weebly.com/uploads/1/3/4/6/134667803/kepanev-nifomige-worakuvereru-tezabimejolorid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527859/normal_5ffa4eb02fbe7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA5 5468 bytes
SHA-256: 51d6f1e6c6ddedada8940a62e6a0266ca95c414e35463896aae98a7f432f0bdf
font_01_sfnt_off0000ee3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3C 10272 bytes
SHA-256: 8e51185546169455af98a51195a3e891b2983230d582e6f6d89f65db69ff9b70

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