Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f993b84698191d…

MALICIOUS

PDF

72.7 KB Created: 2021-01-10 12:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-07-02
MD5: 1d39047d093eedd4f4d686b172b7ee8a SHA-1: 1d61f070fa956f3a02f0beaa9f9b874292304a77 SHA-256: 35f993b84698191dd7b6f0938ffec88feae79e002cce4b50be32708df6ee0a16
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://traffnew.ru/123?utm_term=sharper+image+wine+opener+how+to+use PDF link annotation
    • https://cdn.sqhk.co/sirejeforox/CjaNvjf/games_like_age_of_war_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/xasomegupur/hTCjjwC/88429247298.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/tanapilamaxi/94221895075.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/skills_gap_analysis_template_xls.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/98560124853.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/kenulapekajasakiteb.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/wazogusinejatisosezowaxib.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/cafeland_hack_android_1.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/org_chart_template_visio_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/bifilar_suspension_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/zefezejefewujezilixufe.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/radilixeguwadopuzuloxumoj.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/91456096699.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/20674537897.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/bid_management_process.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_off0000e12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12B 5396 bytes
SHA-256: 9d4620bab25b5c2994953370c9b5ab4363ec5fd1c29642dadae9cfcbcd3d96dc
font_01_sfnt_off0000f368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF368 10152 bytes
SHA-256: f213c535cc8b3f646509f6864cda18a6c39ecbdd1294da14f340e2355bbe73f9

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