Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c5ddaf60e50765…

MALICIOUS

PDF

46.5 KB Created: 2020-10-26 18:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: dd8143c6d2867a7f60e3abe091ca3a2d SHA-1: 7fa570d9528236ba68cb7f623a62310c25e99dff SHA-256: e0c5ddaf60e50765353ba3b8610fe4fe95b1625e821d13a0fe1777ca521b04a0
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=local+calling+guide+germany In PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/be4d51b172.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/waxegof_vipowe_javidosekepod.pdfIn PDF document text
    • https://fezuxikazosulav.weebly.com/uploads/1/3/1/3/131398093/vosopogabufira.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ramugimexixepaba.pdfIn PDF document text
    • https://palarijebatexo.weebly.com/uploads/1/3/4/3/134338538/sugebonerop_nibadojibow_xugowajabevo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385617/normal_5f8c72ad1b304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413705/normal_5f9564258fd51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f89272c03883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368467/normal_5f8e8af0abbb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_5f92e80952421.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/lojowuzesewat_tuxabikugu_wepapemefik_vizepibodu.pdfIn PDF document text
    • https://zuxizakubapepo.weebly.com/uploads/1/3/4/3/134317428/roxewex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5f87655deea1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417046/normal_5f95ceb00918b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5f8b12ee54649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379370/normal_5f8b3bf5bc57f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407302/normal_5f94282db4105.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/zikoviwodedupili.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/8651555.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/zusisuxi.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/4caed74e52fa.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000076f0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000076f0.bin)
    • https://s3.amazonaws.com/sabegokek/awaken_the_giant_within_workbook.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/pofunemapeka.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/schindler_s_list_flute_sheet_music.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_off000076f0.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F0 5124 bytes
SHA-256: 800b5244cfd9fd84c2f077c32e6ddeb5ae41b58538094f657686b907a1c11caf
font_01_sfnt_off00008845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8845 10688 bytes
SHA-256: 5b3dc85da12aab4aa9bbc5e81f95eae9935f7eb2658d9e243f99d9073b79da4a