Malicious PDF — malware analysis report

Static analysis result for SHA-256 4526791edebd674f…

MALICIOUS

PDF

71.3 KB Created: 2021-02-28 18:27:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a32ce7213b16ffb411eb862446248a0a SHA-1: 1e8b3b82a29ed2ed41ad095fb96a85da61f82d8c SHA-256: 4526791edebd674f9d62a109d4766a58f6bd0cdaaaf062bcd6753b62edf0befd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=flashlight+energy+transformation PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454171/normal_5fcd8339e2f48.pdfIn PDF document text
    • https://dajikunizitawis.weebly.com/uploads/1/3/1/1/131163857/7dae9a416250d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377380/normal_603276bf3e32f.pdfIn PDF document text
    • https://domaruvujus.weebly.com/uploads/1/3/2/6/132683142/e7318f.pdfIn PDF document text
    • https://raponomipa.weebly.com/uploads/1/3/2/6/132681826/2fa90bc62bf.pdfIn PDF document text
    • https://wuxinuwizon.weebly.com/uploads/1/3/0/7/130776673/d52f4a996345.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/2095523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495413/normal_5fd3c997687d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450876/normal_5ff583cb021e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459645/normal_5ff94f9aeb1c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379848/normal_60051fe0a40cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460682/normal_6026097c85db0.pdfIn PDF document text
    • https://bexokibuki.weebly.com/uploads/1/3/2/3/132302940/6b4e9.pdfIn PDF document text
    • https://jigugelelatowo.weebly.com/uploads/1/3/1/4/131437208/buzif.pdfIn PDF document text
    • https://juxufosuzuvol.weebly.com/uploads/1/3/1/4/131437906/997ebf8345b8d02.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
    • http://bosefijov.epizy.com/c_diff_acg_guidelines.pdfIn PDF document text
    • http://fazajupozapufo.rf.gd/56449726902.pdfIn PDF document text
    • http://pamubaj.epizy.com/15357266171.pdfIn PDF document text
    • http://nakedaxosa.rf.gd/39957414728.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_off0000ce16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE16 5024 bytes
SHA-256: d51a41bdaa43eedd6f7310b42966692d62eb54db739b7446ab86eab635a0349b
font_01_sfnt_off0000defd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFD 10364 bytes
SHA-256: f1f69ba2f8b88380ff3f593854cb27ec7a2c9fcb3feda65c6f24abba1c3986dd
font_02_sfnt_off00010221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10221 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378