Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2e95bfb05090b5f…

MALICIOUS

PDF

37.5 KB Created: 2020-11-08 11:39:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 86ca39975dd508747093aedaafbfac34 SHA-1: e75dda8bb02b9c1871796ce291e5794e9d5caabd SHA-256: c2e95bfb05090b5fb781f64251dbcd6d1c45ca2cd429ae42d3181a6e7d544c22
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/aws?keyword=most+expensive+airsoft+guns In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371790/normal_5f88545d18f0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368741/normal_5f8cc22671bee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422893/normal_5f9b3ee37c28c.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/zufenusorufulewam.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/vemakebojutig-luwugofusuvena-toxiritinixo-bakuw.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/ronenitevodo/phim_hay_tv_org.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22f1f093-aa2b-40f9-9658-0058e8ff2365/cnn_10_january_17_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/mexew.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/83856749827.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/profecias_de_ana_catalina_emmerich.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/manual_locking_hubs_for_1998_ford_ranger.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_off00005334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5334 5172 bytes
SHA-256: 875a68cd708fac136ef1642b80587b28dd1815813d190aff330e546ae1db9e73
font_01_sfnt_off000064f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F6 10812 bytes
SHA-256: 8cce585600aab06e42924a0503a77d9c4562cf50eba023071757fb13cf93cc3d

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