Malicious PDF — malware analysis report

Static analysis result for SHA-256 1483702f0a6fc556…

MALICIOUS

PDF

73.0 KB Created: 2021-02-16 22:12:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d3c7c915cb447331411b4ee7ff8f31d1 SHA-1: 83bbf25eb23f385bb453892679cc2e095e62bd44 SHA-256: 1483702f0a6fc5561c774c7dd51790e8fe9149ef8daddaf0bff0aad7fa4a3aa1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jottigo.ru/123?utm_term=why+is+youtube+playing+black+screen PDF link annotation
    • https://cdn.sqhk.co/molivovuki/ThhgdjB/rugaxepeposefapake.pdfIn PDF document text
    • http://qupieasy.online/24645322840wksb0.pdfIn PDF document text
    • http://luchdobro.site/sufadofozatesomolixge22x.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/ajejfji/76890890741.pdfIn PDF document text
    • https://cdn.sqhk.co/wugolekufo/9Igc55K/2717944291.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/jjhabRs/povavosipeti.pdfIn PDF document text
    • http://requiredjokblog.com/2964672673wwzxx.pdfIn PDF document text
    • https://xafasujogi.weebly.com/uploads/1/3/4/3/134374351/kitijofofagazud.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/zghhihi/fill_hole_in_hardwood_floor.pdfIn PDF document text
    • https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/dofaku.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/fuzafuzeruwit/imaginary_numbers_worksheet_algebra_2.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/51931128800.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/upper_limb_anatomy_lecture_video.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/18108358815.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/wedding_budget_calculator_spreadsheet.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_off0000e32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32B 5512 bytes
SHA-256: f343837b5ea66632849ea2d93632d0d2fd53ce870afe51bf7594989e37a5d211
font_01_sfnt_off0000f5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FE 9776 bytes
SHA-256: ff848cbcb18e66a54bed9fb983cc9e6dd91ea7466148339ee008e8b7557d68f9