Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c5b277f5c67aee…

MALICIOUS

PDF

72.0 KB Created: 2021-02-12 13:59:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 260dc8cc1d31a66ccb6cd4af593a063c SHA-1: 95fedff8bf389e5d86cbe6b1bd619d19e9929ce2 SHA-256: 56c5b277f5c67aeeefb416dfef8e92280be6d86595b52d8dc16d95c1cec7a79b
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=income+tax+calculation+sheet+form+16a PDF link annotation
    • http://vinnipoh.fun/cahier_de_recette_informatique_excel_exemple7yn4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368229/normal_5fee39c043b71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459776/normal_600a6b4082f22.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/ravuxudibure/23123770464.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/petty_cash_advance_form_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/ayushman_bharat_hospital_list_gujarat.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/software_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/didejasubumupe.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/zonokexurasizo.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/cbre_office_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/carrello_elevatore_manuale_subito.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/neturuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/91404796689.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/23251290461.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/wadipin.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_off0000da2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2B 5332 bytes
SHA-256: 794745e33995b35611b8409e9fe900529c19949fe0baed6141d924b134dec32b
font_01_sfnt_off0000ec2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2C 10996 bytes
SHA-256: c294a4096e9c26f7413186b578957106dc316ede9e1cf56d8d92688be23d0446