Malicious PDF — malware analysis report

Static analysis result for SHA-256 992fa9ff8ae96007…

MALICIOUS

PDF

72.9 KB Created: 2021-03-06 11:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: afb1d45975659018dcf0086f3e786ee4 SHA-1: 1ba3fa34bdec8d506faa05504daaa9f45326b487 SHA-256: 992fa9ff8ae9600797b7683975aefe17104bfe14ddcbb65132e3af577a1bcd78
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=chapter+6+accounting+answers PDF link annotation
    • http://uniques.space/mivomepamiwimagimitofelembp1se.pdfIn PDF document text
    • http://store50off.info/xafonipofojuxea0yqu.pdfIn PDF document text
    • http://gigezesuzobe.getenjoyment.net/sibijuzelepiduzinebuwe.pdfIn PDF document text
    • http://mifvideo.space/athenaze_an_introduction_to_ancient_greek_book_1_teachers_handbookm45e8.pdfIn PDF document text
    • http://lovemecompletely.com/creep_2014_movie_freeqiaar.pdfIn PDF document text
    • http://albl.ru/fearless_friday_4a_football_scoresy4xjm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_5ffff5a050040.pdfIn PDF document text
    • http://idealslimitalia-ufficiale.site/betekolegeguturetipijh9mo1.pdfIn PDF document text
    • http://fruit-italy.space/best_camera_app_for_androidh0yt2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445750/normal_6021d30588454.pdfIn PDF document text
    • http://cabinetshq.xyz/nisekidufaxipivotz5ycx.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/wikurixobelu/89542964931.pdfIn PDF document text
    • http://fazaburifug.myartsonline.com/lapapipive.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/shout_hosanna_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c599a8e-3b68-4c1e-952b-ce7848659b0b/what_does_enthalpy_mean_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/7545521533.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/79997520542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960dc594-c024-4a9a-a997-95a4cd6ef16c/gokovemifebovo.pdfIn PDF document text
    • http://lejiletuvasipib.onlinewebshop.net/why_my_briggs_and_stratton_wont_start.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/30129839947.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_off0000de52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE52 5316 bytes
SHA-256: 1b8c6f578ba24462718fc596f34d7ccb574b25931671ec7bd82ead60b99bb287
font_01_sfnt_off0000f070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF070 11116 bytes
SHA-256: 52ce236f68c3fbd50fe09a5349f840092fafe5406b555eaa94957ad4ebb20f20

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