Malicious PDF — malware analysis report

Static analysis result for SHA-256 53658f4e87644fe6…

MALICIOUS

PDF

71.0 KB Created: 2021-03-03 12:09:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: faf7533ddd49f086e47a80f533c4a21c SHA-1: c0e03d20145dda486e6b68cde5de96a0f88c3511 SHA-256: 53658f4e87644fe6074ca7851f537118c86b2abc0062caf3c96a1d247b2d3766
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://midufefew.ru/wix?keyword=baby+shark+template+birthday+invitation PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388407/normal_5ffd2ba6c5c04.pdfIn PDF document text
    • https://cdn.sqhk.co/kovezozeseg/KUjdgjc/46030915150.pdfIn PDF document text
    • http://gopubewigofopa.iblogger.org/desired_capabilities_in_appium_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_60257a413c726.pdfIn PDF document text
    • https://cdn.sqhk.co/fesoxuleri/iem7Gb0/45751585766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_602da0d1b5dac.pdfIn PDF document text
    • https://cdn.sqhk.co/tetolonul/ugiwDHx/1886452300.pdfIn PDF document text
    • https://cdn.sqhk.co/dilobowuz/WaOWQif/beholder_dnd_monsters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420906/normal_5fca053e3493a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://liraperuwuw.atwebpages.com/fumonedoxepapadewupez.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/legacy_of_discord_guide_to_high_br.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/16295707227.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/ziviwalivenubipevevovu.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/vma_music_awards_2019_performances.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC2 5616 bytes
SHA-256: 004434bca771e336098ae301764f94619c5ed481940d9d6d887360530fadc3ef
font_01_sfnt_off0000e1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A6 2268 bytes
SHA-256: 7f38c7bd3076d5ec567b373f8788658f617417f44aeaffad1c2d563936ecbb0a
font_02_sfnt_off0000ebb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB6 10212 bytes
SHA-256: b4f20babefeeb866fac2bfeea6aadc0b8584a3a25c37b649b8e72dd4e9346533

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