Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c38735aa0806c2…

MALICIOUS

PDF

77.1 KB Created: 2021-02-08 08:02:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a9252f9dc2492bb9b5a642106ff93c49 SHA-1: 09af9985fa9ab571bc8cc8b9831652146b9e44b8 SHA-256: 58c38735aa0806c27be80e57a1e4837c35d12d6f5299df6013a068069aea2c46
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://jacksth.ru/123?utm_term=sony+vpl-vw50+sxrd+projector+manual PDF link annotation
    • https://cdn.sqhk.co/fegukajebaj/aEsEqhd/lumufizog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422378/normal_60147a0e15689.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491965/normal_5fe3e24eb2c3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379054/normal_60034b7da1f83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480598/normal_600777051072f.pdfIn PDF document text
    • https://cdn.sqhk.co/mejeteboxav/djhjgfa/larumaxaduxodosivigugin.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/rtkxVja/live_random_video_call_website_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tokebamojos/YjhjjsN/listening_disorders_symptoms.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/poguvelefa/dun_bradstreet_international_credit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/gukelopogusir.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/wapking_bollywood_song_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/9823792271.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/wosovukubazuzebunomex.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/kegatigexizonopevel.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/printed_greaseproof_paper_sheets.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_off0000ee43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE43 6020 bytes
SHA-256: 132f05eebcf5fa5ab85d633153317ae8d20353defe2daedf28f0c87312877e16
font_01_sfnt_off000102d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D8 10696 bytes
SHA-256: 6111e53eb8e87688b2b0d1842a729bc9b48ec0f9466412aa94b4281dd88041fe