Malicious PDF — malware analysis report

Static analysis result for SHA-256 c961aa593a360f49…

MALICIOUS

PDF

44.1 KB Created: 2020-10-24 13:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ff530a421970546823ad29ca6fd12aa3 SHA-1: f6c86f87a7d197456f24c05f9293330db694d151 SHA-256: c961aa593a360f497ca513b334d6e6c4f81e879166f50f17918608eecc87d1b8
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.link/pify?keyword=pink+panther+theme+chords+pdf In PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/505f4b3a.pdfIn PDF document text
    • https://pafetuvuwube.weebly.com/uploads/1/3/4/3/134321561/batadadoxogif.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/mebudikog_sumobut.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/4207772.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/8767144.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/xibebaje-morebadekedazu-vofubotegisi-notune.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/wixesapu.pdfIn PDF document text
    • https://sixapinipuso.weebly.com/uploads/1/3/1/3/131384402/3476db.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/3408347.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_5f894f5cc29b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391008/normal_5f9079dfb1839.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f870822b33b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380084/normal_5f91381c16c9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f89b590b8fab.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006a64.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006a64.bin)
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/49222919842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8829/2261/files/sniper_special_blood_killer_hack_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/dotageruva.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/nexatopawufuxabele.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/wukorojetijawutojewe.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/alexander_pushkin_obras.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/list_of_botanical_names_of_plants_with_common_names.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/ain_t_no_sunshine_piano_sheet.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_off00006a64.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A64 5428 bytes
SHA-256: 35f8a59f9840fc47a4e1ef73e7409054091f4880eedbc6f308c2583dd21d250f
font_01_sfnt_off00007cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB3 10940 bytes
SHA-256: a98ed3686a679439c19fbd93bbc54a6d8be92de712d41d8ce2ef368266faebe0