Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9603547fa557043…

MALICIOUS

PDF

51.4 KB Created: 2020-09-30 11:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3af7ec3f7215ae4dc7ad2af38a604862 SHA-1: 276861e48cf81a683393c6c9dfdd9ff4f45ad065 SHA-256: a9603547fa557043561dd2bed8747089157ff6c6e2d0a4b459c145391b9b67e9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=nationalism+in+india+class+10+mcq+questions+with+answers+pdf In PDF document text
    • http://rafage.thogersenfamilyfarm.com/uploads/1/3/1/0/131070325/438390.pdfIn PDF document text
    • http://lisuweti.creativesocialdistancing.com/uploads/1/3/2/3/132303338/xijedelataduximi.pdfIn PDF document text
    • http://files.smafarms.com/uploads/1/3/1/3/131383721/wodugimeberexis_kezidokenajimat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/006fc282-9027-40f3-afb4-66fde90bfa9e/39283538033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adcd6859-a470-4c3c-b45c-b6538af5c64a/46901802993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd766061-d0e4-46a6-8e48-947908f8cfb0/44327416777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90d95456-b1d8-4ee4-a43f-d65701e75eaf/xovex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026defc9-1a41-4f90-a5a4-76909933ab1f/supinuposoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26619433-e9a0-4855-b8cf-3d3aa93861e1/lozuzakitigulapev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/725bff41-9fbb-40b0-bf14-7ab48c18b9b3/retepotumodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fb3504a-88fc-4c67-a3f4-85f084347886/32225186388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a8ad63-8478-4774-bc43-7760f495084c/13710912864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e25fc366-b3ae-4c4e-a639-b709ea5ee9ad/judopudatilotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53e8f603-4a86-4c1b-a447-3b16164b5a2f/komobizajabumigetatak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bcdb063-8a19-4693-a12d-cf2f503b13a0/fanaropiresubisag.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_off000089f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F1 5776 bytes
SHA-256: fce693105a47a46ed53a0c8bccc1d2a23e11f142de2cecb2c3f34c27687fb318
font_01_sfnt_off00009d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D8B 10172 bytes
SHA-256: a0923b203bf9519286d1695917e3e37d03dbbb1baa2c33d684e0c0026c1ef6d9

Open this report in the interactive analyzer, or submit your own file for analysis.