Malicious PDF — malware analysis report

Static analysis result for SHA-256 f16ef06b3f71cda9…

MALICIOUS

PDF

71.2 KB Created: 2021-02-22 14:08:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 14477fffb30856749888dd700cdeea06 SHA-1: c165e1d9e9cb13c67fb9560a6861861f29dd51e4 SHA-256: f16ef06b3f71cda90d9d9d550cef72610ea30550a1714896ffe60365bbcd3150
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://maypoin.ru/aws?utm_term=the+complete+paladin%2527s+handbook PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382772/normal_5fe865828a9de.pdfIn PDF document text
    • https://cdn.sqhk.co/safubuguva/Ejnmrhd/flipkart_owner_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473892/normal_5fe2a50ab84ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_5fdc4fd67d0c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383165/normal_6002fe7ac3fa6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470019/normal_5ffb43ac28775.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_6014e6902752e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453901/normal_5fe516f21a503.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/hhbiijc/photo_editor_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/CXidpjb/ghostrunner_preorder_trailer_ps4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tononuzaribiw.rf.gd/nukuxuzom.pdfIn PDF document text
    • http://xijotat.rf.gd/39948444176.pdfIn PDF document text
    • http://zapuvem.epizy.com/oxidation_reduction_balancing_worksheet.pdfIn PDF document text
    • http://xiruzila.rf.gd/guwexategu.pdfIn PDF document text
    • http://nugafafekovad.epizy.com/70319062162.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_off0000d8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AA 5404 bytes
SHA-256: fba5653d673799cd86731f30ad1ed7b05bf01991ee7b29263d096fc44538a711
font_01_sfnt_off0000eae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE1 10996 bytes
SHA-256: 26449be1a81b4b29ed03af59325f080bb49fce5084f6f83e873b9be111ac1de4