Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d52166969862f2…

MALICIOUS

PDF

46.9 KB Created: 2020-10-09 04:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 2e86ae495d26a1cef0e85e419f5ed4dd SHA-1: e394c25d0ea945ffb0183989d15b66a743a9e870 SHA-256: a5d52166969862f2839ee4963e6a5a60c69329cd076e60987e2b1328eff6dc00
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://cctraff.ru/pify?keyword=glass+dome+display+ideas In PDF document text
    • https://site-1036640.mozfiles.com/files/1036640/kefudosatekam.pdfIn PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/fiwuvifa.pdfIn PDF document text
    • https://site-1039566.mozfiles.com/files/1039566/rejakokefobekilami.pdfIn PDF document text
    • https://site-1036635.mozfiles.com/files/1036635/72908684900.pdfIn PDF document text
    • https://site-1039852.mozfiles.com/files/1039852/53304506258.pdfIn PDF document text
    • http://files.sweetboxbylaura.com/uploads/1/3/1/4/131406592/882ad5ef5c7b7b3.pdfIn PDF document text
    • http://xuvemijis.divinesoulcenter.com/uploads/1/3/1/4/131453062/9741733.pdfIn PDF document text
    • http://widajufi.depthstiny.com/uploads/1/3/0/8/130814579/jajuvabegojenoj.pdfIn PDF document text
    • http://files.vickijettterry.com/uploads/1/3/2/6/132696526/1513094.pdfIn PDF document text
    • http://gaxuvaba.copperacademypreschool.com/uploads/1/3/2/8/132814432/fb3216.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/1/0430/4971/3817/files/what_is_a_new_products_protocol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0952/3102/files/3264884919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0308/6501/files/kawasaki_650_atv_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2700/3549/files/le_comparatif_et_le_superlatif_exercices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/how_to_make_an_anvil_in_minecraft_pixelmon.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000681a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681A 4744 bytes
SHA-256: cbf9e6e5f3b5896473d0ec2b645435fc281a5f27b44832bfd37364421b6c4d92
font_01_sfnt_off00007847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7847 12424 bytes
SHA-256: 2177d82238158bc9033d2a43f7b746db9a83b06b8af223f5fbdbc37c0432c171
font_02_sfnt_off0000a017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA017 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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