Malicious PDF — malware analysis report

Static analysis result for SHA-256 de68fa8c6fa30bf7…

MALICIOUS

PDF

40.9 KB Created: 2020-10-09 12:16:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 027e37b57e18a42b4b4b63dc36a1d955 SHA-1: 40d0a15221ead0f7e989fdefc86fc784d51e4fc4 SHA-256: de68fa8c6fa30bf78611b438a12273a02b12d098a71805a9970b391f32552224
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ttraff.club/pify?keyword=einthusan+malayalam+movies In PDF document text
    • https://site-1037130.mozfiles.com/files/1037130/53206662481.pdfIn PDF document text
    • https://site-1039253.mozfiles.com/files/1039253/kalezovuxaz.pdfIn PDF document text
    • https://site-1039161.mozfiles.com/files/1039161/fixuv.pdfIn PDF document text
    • https://site-1037035.mozfiles.com/files/1037035/95902743672.pdfIn PDF document text
    • https://site-1037176.mozfiles.com/files/1037176/43202924582.pdfIn PDF document text
    • http://zemepo.kyocreations.com/uploads/1/3/1/8/131856214/zudumazesagib.pdfIn PDF document text
    • http://baxijina.spiritandsageshop.com/uploads/1/3/0/7/130740323/jepesepomenatogi.pdfIn PDF document text
    • http://files.driftadvice.com/uploads/1/3/0/8/130814676/b9d42313802067b.pdfIn PDF document text
    • http://xutid.oakmeadowsfarmllc.com/uploads/1/3/1/4/131482803/433091.pdfIn PDF document text
    • http://files.actionmachineinc.net/uploads/1/3/1/6/131637021/riloruralutemuzobene.pdfIn PDF document text
    • http://maxuki.madcatcreative.ca/uploads/1/3/0/7/130775470/nusivowik_lenuvidafemiku_posewepadezox_kosavuwidawu.pdfIn PDF document text
    • http://files.vval.org/uploads/1/3/1/8/131856285/vedaniros.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/76bc40cd-4677-4a99-b87f-516a9d981877/27714358901.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f60845b7-35fc-408d-a55a-b526258af172/87353577230.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_off00006413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6413 4948 bytes
SHA-256: b60941d2903a5f1edb6269d35aeea0e9e0a051f51dc4f1cda05ed3c78e0468b6
font_01_sfnt_off000074cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CF 10012 bytes
SHA-256: 522e141918fb84e282e02acd9b4ef4761b3e854708e9a8ed1d576a83ec0c0232