Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c472e936d07e449…

MALICIOUS

PDF

74.7 KB Created: 2021-01-25 16:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: a031f8b79e2fb90a895791e707d99506 SHA-1: cde7654e6c1de08b20ef919ea894cd75031bf177 SHA-256: 1c472e936d07e449994fab7a7bc7e62895da035201c263fe308968d2db53cd32
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=here%20wego%20offline%20maps%20gps%20download In PDF document text
    • https://static.s123-cdn-static.com/uploads/4447450/normal_5fe0c32d71663.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411273/normal_5ff7a39020e63.pdfIn PDF document text
    • http://maddot.space/castle_defense_king_hacko852t.pdfIn PDF document text
    • http://axecheat8.xyz/37891740727m24ea.pdfIn PDF document text
    • http://copyrightnotices-form.com/92299807473ztyh7.pdfIn PDF document text
    • http://stebsmeh.space/pejiriwoxixemiuy4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402294/normal_5fc7e095789a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369165/normal_5fd7d879dca7d.pdfIn PDF document text
    • http://parrrtner.xyz/lawopepewaxuvanawipinomzi.pdfIn PDF document text
    • http://copyright-rules-help.com/5833490070f6ceh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479435/normal_60061d3b18b0a.pdfIn PDF document text
    • http://mnclassis.org/17244472007qeh3x.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/gfy23vO/red_ball_game_2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488806/normal_6004f167399a8.pdfIn PDF document text
    • https://cdn.sqhk.co/keliziniw/fmji2Sv/dr_king_capitalism_quote.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fizuxobitunoge.epizy.com/color_my_world_flute_sheet_music.pdfIn PDF document text
    • http://debukigezi.epizy.com/contrastive_linguistics_books.pdfIn PDF document text
    • http://wafogaz.rf.gd/travel_brochure_examples_for_students.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_off0000e72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72E 5416 bytes
SHA-256: 54e00f6b5164d93a46f31d135e43284b79d92f59404d12e5a2a91670153f11eb
font_01_sfnt_off0000f996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF996 10516 bytes
SHA-256: 1ebbf6e971e1cefa07f1e84f8d65e479a976a3f223eae92da963deb77ae7c09c

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