Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b8734641d5ac9a3…

MALICIOUS

PDF

48.9 KB Created: 2020-11-06 08:36:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8910090331e840ddd8bc7fc29472791c SHA-1: 532ea21ea09a1fe43f5fc43e856d44563b9174ea SHA-256: 7b8734641d5ac9a3f36c36e2b7a3e5c54f28115a75bcb9a7577e3c8762e68240
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=solving+one+step+equations+lesson+plan PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386848/normal_5f98d220bbde0.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/6060638.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/8693346.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/2809812.pdfIn PDF document text
    • https://jiluzeros.weebly.com/uploads/1/3/4/3/134365673/litugitawavalelogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5f9930f20dd0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_5f92e0a956024.pdfIn PDF document text
    • https://nosavarugogitov.weebly.com/uploads/1/3/4/4/134488680/967de9bf805af4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5f8c0e65a0268.pdfIn PDF document text
    • https://xekixudag.weebly.com/uploads/1/3/4/3/134336078/4919694.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9081/4143/files/17213655680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8504/4152/files/west_jr_high_school_belleville_il.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a5e0b7e-9853-4ea0-9f5d-3b1cb91f5c30/age_of_conan_dt_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/used_golf_clubs_for_sale_tampa_fl.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/bloons_tower_defense_3_unblocked_games.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 PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000750e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x750E 5064 bytes
SHA-256: b4ea4dd9e2c789b922f550850a147545a6cd2c8c653437b462b1d28353ceb21f
font_01_sfnt_off0000865a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x865A 9972 bytes
SHA-256: 596f907fc8a9bfda6311b6c5198518e844b4be3dfe2801732cf7c64a2ce7dea4
font_02_sfnt_off0000a871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA871 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.