Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0c5086eea6594c…

MALICIOUS

PDF

35.1 KB Created: 2020-10-30 04:39:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e110432e80473d0d74da8af99559c787 SHA-1: b3f0993ebbd989dbadd8c06cc9eceb939acf523f SHA-256: 7b0c5086eea6594c2477718537f49a60941668f6015c2e6fca8a6b2773fc61a6
124 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.
  • 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.link/123?keyword=down+by+the+banks+of+the+hanky+panky+game In PDF document text
    • https://zovijewef.weebly.com/uploads/1/3/4/4/134400079/9508726.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/2453840.pdfIn PDF document text
    • https://wipaluxeko.weebly.com/uploads/1/3/4/3/134346688/a87aa5165608541.pdfIn PDF document text
    • https://kuvinonufero.weebly.com/uploads/1/3/4/3/134307364/c5c1a9d15d.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/gogisiluvaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8c646ea231b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5f896bc238b6c.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/7408075.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000049e3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000049e3.bin)
    • https://s3.amazonaws.com/luropi/pifepegedusigagikew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c37eaa54-591a-47ab-a81a-803c931d1376/zegixelazetorinimepubufaf.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/zefurav.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/universal_minecraft_editor_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e856b853-7a0c-4059-9c4a-d01f93c6a616/teximef.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/ssc_stenographer_paper_download.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_off000049e3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49E3 5584 bytes
SHA-256: 8069171001e127e3abb67cc5eff66e80655c9cb46adc4538d1be0e036217ef65
font_01_sfnt_off00005ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE3 10084 bytes
SHA-256: 3d01797e62ff9619a54d1bbfa0cf47b5aab9fc242cc6a37ca3cd93ac49ed46b1