Malicious PDF — malware analysis report

Static analysis result for SHA-256 da16e42f4e664f73…

MALICIOUS

PDF

67.8 KB Created: 2021-03-02 06:38:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d7aafd1725be929848a1827beea1d712 SHA-1: 46ea93e4747fd9ecbd3a53e6a8d73e03a8cc15d5 SHA-256: da16e42f4e664f7317a354e3b8ad1b8fb12cfd05cb80f489a04323d13dde7810
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://druttle.ru/wix?keyword=algebra+structure+and+method+pdf PDF link annotation
    • https://fodoradesak.weebly.com/uploads/1/3/1/4/131454556/povuduxoxedufo-guzezepa-gomawig.pdfIn PDF document text
    • https://cdn.sqhk.co/nudabesawi/35vjdjg/pavusodadujop.pdfIn PDF document text
    • https://jomokojexenubi.weebly.com/uploads/1/3/4/8/134877089/c7d8c2.pdfIn PDF document text
    • http://silkhfig.bid/jifegebuwodaxts.pdfIn PDF document text
    • https://nafizanoride.weebly.com/uploads/1/3/4/5/134596231/4529968.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/DhgGEij/pitutatajiz.pdfIn PDF document text
    • http://xewixawagupip.iblogger.org/duralast_jump_starter_600_manual_espaol.pdfIn PDF document text
    • https://kizutete.weebly.com/uploads/1/3/4/0/134000266/pasufidijiga.pdfIn PDF document text
    • http://com-signto5.xyz/foloxikulosojetugezuwufi6x8mt.pdfIn PDF document text
    • http://fruit-italy.space/57926353918grcqn.pdfIn PDF document text
    • http://gufutaca6.xyz/33275002638nr1dc.pdfIn PDF document text
    • http://bnl-jobs.com/comparing_linear_functions_worksheet_algebra_1yub9i.pdfIn PDF document text
    • http://gufutaca5.xyz/android_video_call_appeu1nu.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/rakabexozu/cells_and_tissues_anatomy_packet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/singapore_passport_photo_size_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/juweduma.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/nubidukuwedadexovol.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/10313354943.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_off0000cbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE3 5700 bytes
SHA-256: 438544bf32b0dc3684a7c794ddfc6b8729db443842447220392f2310a7c27719
font_01_sfnt_off0000df1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1D 10276 bytes
SHA-256: 68e54933a614e0d99042c9a0f6244d3029b565bce79b87187ceb7efe8461f4a3