Malicious PDF — malware analysis report

Static analysis result for SHA-256 18716e085dc101e2…

MALICIOUS

PDF

76.9 KB Created: 2021-02-24 18:53:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cc8c3a49d79c098dbfced8eac169a78a SHA-1: a9f4e19514d68b896b18863ae0ae99f476f19324 SHA-256: 18716e085dc101e292e72c65a7129a29ab4ac71115b6c1ef5ca0c3d5995ec9dc
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=linda%20goodman%20astrology%20forum PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473954/normal_6008b6b8998d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375708/normal_5fe057d1bf230.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_6029f37163dc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450907/normal_5ffd6c77ea227.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379034/normal_602538ff4a536.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447263/normal_5ff7597754a2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387054/normal_6005cc3440683.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468540/normal_6020379128034.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476936/normal_60174880cd37c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469847/normal_601b18c2c0138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_602f6d60bf73f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477379/normal_60041d21cc6e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386095/normal_5fd926cc31ece.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392871/normal_5fec78628ff3b.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/tupofelasujewas/circular_motion_class_11.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/simixodivakewajalulaw.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/refetapodemojota.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/bhojpuri_audio_song_album.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_off0000ef71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF71 5268 bytes
SHA-256: b06fd23d9f5890c42a88b235c4695fe162b7a3a4f68ca655708e114fce519ad4
font_01_sfnt_off00010155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10155 11008 bytes
SHA-256: 23ab774abfd9d27ca8733208e940c05dc5d646d7fed3f2229c9739e5148ede64