Malicious PDF — malware analysis report

Static analysis result for SHA-256 39b9f980b151765b…

MALICIOUS

PDF

36.8 KB Created: 2020-10-04 07:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0141eda584af0fe624e237a29476277d SHA-1: e598780b2af42dd4ac3e64f43e9917f913e5df50 SHA-256: 39b9f980b151765b3ca69b5f877ad37886ebed380f66cc3506a8b176654ff1b0
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://gettraff.ru/strik?keyword=halo+bassinest+swivel+sleeper+manual In PDF document text
    • http://tajep.hawaiianisleflowers.com/uploads/1/3/2/7/132740328/8766516feeab85.pdfIn PDF document text
    • http://jovidapoj.logosnola.com/uploads/1/3/2/8/132814097/xivekuji.pdfIn PDF document text
    • http://files.canyonchurchcamp.com/uploads/1/3/0/8/130874183/foroj.pdfIn PDF document text
    • http://files.tracykrulik.com/uploads/1/3/0/7/130739742/xozuxufitado_genuwa_tizolezolo.pdfIn PDF document text
    • http://gotidim.thecheesesteakplace.com/uploads/1/3/1/0/131070036/tafutulovesidewo.pdfIn PDF document text
    • http://tilumaduk.monarch-creations.com/uploads/1/3/0/8/130874493/f2a39a3a76b29.pdfIn PDF document text
    • http://files.silviatomarchiophotography.com/uploads/1/3/1/4/131437139/fukuzof_kogagixita_wisev_dupuxo.pdfIn PDF document text
    • https://site-1039393.mozfiles.com/files/1039393/nepodafiriburizikofa.pdfIn PDF document text
    • https://site-1041486.mozfiles.com/files/1041486/gekozovimapagex.pdfIn PDF document text
    • https://site-1043618.mozfiles.com/files/1043618/7412743899.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8835/4211/files/bewileliret.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7711/0422/files/moteguleroririjagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6454/1852/files/tasarezurimusukepotel.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_off00004a09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A09 5216 bytes
SHA-256: e2aa33850454653224df2bd0f3f7b8ed88c0dc38212a889503850eef0d5d3e8e
font_01_sfnt_off00005bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBD 2072 bytes
SHA-256: 044cf746dda20429b261521fa8cfcac96d06a6a3fe6cadf4c7ede8771acfdf20
font_02_sfnt_off000064ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AD 9824 bytes
SHA-256: bbc66e08c42423d6241fbd8dfe862df7c60418418335b8649580da8c063b1436