Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae08eed03a0d35e3…

MALICIOUS

PDF

64.9 KB Created: 2021-02-11 04:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f80b6ffd17d5c5238c83f3ca823b609e SHA-1: 88a31e75fa79ed479feb9388200c3b27a7ab51e6 SHA-256: ae08eed03a0d35e331a511cc3bcac5eb770ebb20502b7c7f4de1d0c9500a0388
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://baarspo.ru/aws?utm_term=bastille+pompeii+audio PDF link annotation
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/470970.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491687/normal_5fddaff839dc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461483/normal_6018dea156862.pdfIn PDF document text
    • https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/ginupok-wekunukimamek-titaw.pdfIn PDF document text
    • https://jisixeda.weebly.com/uploads/1/3/1/4/131409884/nixom.pdfIn PDF document text
    • https://gasimela.weebly.com/uploads/1/3/1/3/131398285/wonakunuxuzez-fotew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481828/normal_5fcaa7479dfca.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/bufipevuril/jivogidali.pdfIn PDF document text
    • http://litufowanukoro.epizy.com/julia_michaels_what_a_time_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/pazikazimaxasibix.pdfIn PDF document text
    • http://zejagal.rf.gd/best_games_for_couples_to_play_android.pdfIn PDF document text
    • http://lufefavi.epizy.com/creating_a_monthly_budget_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/71285079872.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/fabulous_an_anthology_of_short_stories.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/foranujenoketapif.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_off0000c2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DC 5060 bytes
SHA-256: 6d8da20e1381c5edf6dabe48ead9000f453e727cc747616172a0d4979487f644
font_01_sfnt_off0000d3fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FE 10300 bytes
SHA-256: 65ae15642594d9a1301316130966fe47e4664399119f0aa475db1fdb675db226