Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84954bde38bdebc…

MALICIOUS

PDF

70.5 KB Created: 2021-02-28 11:30:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 480702b03cf80be913652ae78e4e8c78 SHA-1: a2185963da83a2ff9daf1730d58a7976bfc1b1f0 SHA-256: e84954bde38bdebcc41ab74bb3bc436cd2ba54be572bdffd74a72c879225502e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/award?keyword=how+to+analyse+data+science PDF link annotation
    • https://tapukupe.weebly.com/uploads/1/3/4/7/134717462/be402741.pdfIn PDF document text
    • https://kuwewukes.weebly.com/uploads/1/3/1/6/131636575/xexapokoxuvi_nurewekekaga_fopabom_vudezonuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449990/normal_5fe1c19d3681f.pdfIn PDF document text
    • http://myimperfectmomlife.com/gerozir84zq.pdfIn PDF document text
    • https://xonajababivoxo.weebly.com/uploads/1/3/4/0/134040492/4455518.pdfIn PDF document text
    • http://copyrightproblem.com/daniel_powter_bad_day_songfactsap5r8.pdfIn PDF document text
    • http://italywom.space/free_online_project_management_courses_with_certificates_uk6e7v8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404310/normal_5ffcb36e19544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454556/normal_6016fbdd8f2d8.pdfIn PDF document text
    • https://mexejafulid.weebly.com/uploads/1/3/4/8/134880369/9521dfd34d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404107/normal_5ff0a59dcda82.pdfIn PDF document text
    • https://jutarufuro.weebly.com/uploads/1/3/0/7/130775772/395f541459f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366309/normal_5ff14b8469d42.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/liwara/yakima_county_voter_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/ziwikejumu.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/rumotoki.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/pinavef.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/pair_apple_watch_series_2_with_android.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_off0000d835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD835 4992 bytes
SHA-256: d9fd05b58dd7b7fc25da71594a7da78e4bf407f183497a57a2fe7e8f870c5834
font_01_sfnt_off0000e955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE955 10456 bytes
SHA-256: 460c48decb934b3ed6ced37470ab221b377cd1b5afd2151548c68f6c4b41d254