Malicious PDF — malware analysis report

Static analysis result for SHA-256 160724d2da4aeedd…

MALICIOUS

PDF

58.7 KB Created: 2021-02-13 06:33:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fce6419f3af2ab7b3ce10cd87deb050f SHA-1: 39ca10dcf7f2049e080bec795074b8483ee3787f SHA-256: 160724d2da4aeedd94fbd6dbfe53db8ea04c2aa8efcf20917c00ae39285ce62e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/123?utm_term=insert+exponent+in+word PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413225/normal_5fd2ad710ee94.pdfIn PDF document text
    • http://wiinorama.fun/56441031500nkcpf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411479/normal_5fe2d1aaa18ee.pdfIn PDF document text
    • http://tosety.xyz/6646108406189c0b.pdfIn PDF document text
    • http://wegansit.space/forces_and_motion_basics_phet_worksheetwd2t6.pdfIn PDF document text
    • https://wofirifitobad.weebly.com/uploads/1/3/4/3/134310136/2757785.pdfIn PDF document text
    • https://podogavefa.weebly.com/uploads/1/3/1/4/131438056/ruverolapuw-bokuw.pdfIn PDF document text
    • http://bullbananavannaone.xyz/fraction_addition_and_subtraction_worksheet_grade_5ej23m.pdfIn PDF document text
    • http://coolvdomaion.online/79230471015m7zy0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373240/normal_60154c713dd39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456143/normal_5fc8b3277caa9.pdfIn PDF document text
    • https://kotedeturu.weebly.com/uploads/1/3/1/6/131606402/dijegejujesuripamemo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/farezelof/ib_english_language_and_literature_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/venewuxutitukilefaviz.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/business_card_mockup_templates_psd.pdfIn PDF document text
    • http://kijemuf.epizy.com/bob_s_burgers_episodes_guide.pdfIn PDF document text
    • http://lojizaruxaz.rf.gd/chaska_red_farari_ka_song_pagalworld.pdfIn PDF document text
    • http://sasoregasot.epizy.com/apsu_rewa_exam_form_2018.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEBE 4808 bytes
SHA-256: 94eab434e6c914c7f8c6f1f39e9ac7d3b7f0a275117219878caa1f2c57c5b097
font_01_sfnt_off0000bf40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF40 9012 bytes
SHA-256: 0565385a5f5e18054110a7f37e072c775358c69269e9d987b94b8f3e3ef352dc