Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6697241eeccf63…

MALICIOUS

PDF

39.3 KB Created: 2020-11-02 06:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: b283c9023038204330b8bb193b10d33d SHA-1: d44c0a60640f7027478adf9d9a1a93875de2ca1b SHA-256: 4f6697241eeccf63fc2df05b20ddf8ba5380bd2b026cde6284bed63eb0393bf2
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://cctraff.ru/aws?keyword=gun+mayhem+2+unblocked+for+peasants In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5f9f6cdd90748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_5f8e6cd15bb1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414169/normal_5f98a93b152d9.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/4280872.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/fimevuzofolufur.pdfIn PDF document text
    • https://lusewixitakotaz.weebly.com/uploads/1/3/4/3/134385759/4571889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385620/normal_5f9f3a69be8c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000598e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000598e.bin)
    • https://cdn.shopify.com/s/files/1/0485/1954/4987/files/bashed_patch_mod_organizer_2.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/lorijolupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf68299c-58c0-4f4b-b152-cfea93c715ab/22542719465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40e3b873-b897-4caf-8f74-5fdee0dded5a/gta_5_online_money_glitch_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3699/8333/files/fuguxatipodivar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a203caa0-c748-431c-982c-9d3ffef37dc5/vebibajeluliwirokaluse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1669ba1c-2991-4c72-b2c8-7d16169c19d4/desijarovonimidewe.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/tarrant_county_voters_guide_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b35b8960-38f7-4c8f-94da-8c5864a36e95/46627380265.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 extracted file (font_00_sfnt_off0000598e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000598e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x598E 5864 bytes
SHA-256: 65b206c4c6446fdb5144636f2ad13bfcc3172798a75323d27502262ea29c70ed
font_01_sfnt_off00006d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D65 10084 bytes
SHA-256: 37453323b9c891dd9927fa014f775e061247170a3d10002c9db4dc6709e1bf5b