Malicious PDF — malware analysis report

Static analysis result for SHA-256 53fec44493c70b22…

MALICIOUS

PDF

54.1 KB Created: 2020-11-08 13:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: af7fa78ce80cc7e347a2615be2e97747 SHA-1: 065f98ca2a1f59e3dfe65d8450c52d52ca25d1ae SHA-256: 53fec44493c70b2257206a6d594a41aaf6177097a1fa081f4b78d01aa0c35e86
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=strange+aeons+player+s+guide+pdf PDF link annotation
    • https://sakifawabepufa.weebly.com/uploads/1/3/4/4/134466371/9956574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_5f8b12199ad85.pdfIn PDF document text
    • https://bajusumuke.weebly.com/uploads/1/3/2/7/132741128/xelib.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/03d3414.pdfIn PDF document text
    • https://vozuzuxe.weebly.com/uploads/1/3/4/3/134314749/rerubiviba.pdfIn PDF document text
    • https://kigibituridugu.weebly.com/uploads/1/3/4/3/134352406/bedurup-sazotudunofija-subodilib-puvotox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fozevetob.files.wordpress.com/2020/11/megavokig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06246ad1-3cc1-413f-872b-2494525750b9/60332383517.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/the_boondocks_season_3_episode_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c5197ba-6271-4fe1-b8c2-a2f2ee3e7d1e/45101206773.pdfIn PDF document text
    • https://gukoxawe.files.wordpress.com/2020/11/menimugutitowegis.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009e8c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9E8C 25868 bytes
SHA-256: 4fbf395caf42cd47e1bffe581aff5ea3e9ba5bb82cb31346cb4cc614db393cc4
font_00_sfnt_off000062ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CE 5412 bytes
SHA-256: 83b73810ac48b60a82272a38458be2a84196319c841a9df293a4285618015c1c
font_01_sfnt_off0000754f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 12028 bytes
SHA-256: 998bcce20842e7b9ea1b347cce4935f99502769724c93dcd46569195de3b5df8