Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c660e5128eb44a…

MALICIOUS

PDF

43.1 KB Created: 2020-10-29 06:56:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 00d2eb30a4f3e59b6aa8c4226cc0d477 SHA-1: bf6abc48e89b6a0f6746e5d929ed0aae834c80f1 SHA-256: c1c660e5128eb44a778860737682b5f9846e110d92d571014586743d3d5434b3
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.cc/pify?keyword=anecdotal+observation+notes In PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/judameseluvupiluwi.pdfIn PDF document text
    • https://wedebiki.weebly.com/uploads/1/3/0/9/130969436/mezaj_tinuzujoni_biniguk.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/togitapagolu.pdfIn PDF document text
    • https://nojarotawufa.weebly.com/uploads/1/3/4/3/134313922/6092418.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/nesubine.pdfIn PDF document text
    • https://zebazowis.weebly.com/uploads/1/3/4/3/134310266/podilenakozaxejatera.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/1867047.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7938/4736/files/ionic_bonds_gizmo_answer_key_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3259/1559/files/48749147389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8140/9713/files/xasivunokuloka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de29d1f-8104-4cde-a56f-5b31dbd524b2/romulus_and_remus_latin_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/jack_sparrow_wallpaper_hd_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/vupexuvul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1dbe17f-c30a-4030-ae6a-f427597e44be/4791368164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b467bd6f-d462-4b6a-a76c-2950d2919caf/98743552479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6216/4644/files/duzepenififuzav.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/gafetesivopefijapuvi.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_off00006a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A81 5124 bytes
SHA-256: cd3545da8f832caa0c58b6f3e3e672aed5224e3e938d7e6297832b8c956c1a63
font_01_sfnt_off00007bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFA 10368 bytes
SHA-256: 7db2c878d1cc0343bbc15c05847387a8bcdca5a90edf320be3c78c19d1890cb9

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