Malicious PDF — malware analysis report

Static analysis result for SHA-256 71fb402b945623bc…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 22:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1e8b0e8c2616b81c6fa0ce914b02ffb0 SHA-1: 61623675c93f7f1f9dd6546e2efe90ad701cc0a5 SHA-256: 71fb402b945623bc98ff4dd5f06a29841be171fd8a46912a266dfb561057c549
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/award?keyword=the+long+haul+1957+rotten+tomatoes PDF link annotation
    • http://prizinsta24.online/beats_solo_3_wireless_bluetooth_adaptery958x.pdfIn PDF document text
    • http://avto-trokot.xyz/sumibelobunud2ltxg.pdfIn PDF document text
    • http://ejqy.com/android_review_notificationsuw6yu.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/ifTdGhc/sssniperwolf_instagram_pics.pdfIn PDF document text
    • https://tetiwaxope.weebly.com/uploads/1/3/0/7/130776033/a55d9f4e.pdfIn PDF document text
    • http://airned.ru/navy_blue_and_gold_ombre_nailst9jc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457005/normal_602feaf2d932e.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/82502452704.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/tedowafomaru/whatsapp_for_redmi_3s.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/89916811258.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/command_and_conquer_generals_for_ipad.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_off0000dc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6D 5460 bytes
SHA-256: 24297eef45ac78ba79dca3feb81961a0798000ab8fb4ac924a9fdea66031327e
font_01_sfnt_off0000eee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE3 10376 bytes
SHA-256: d73320de740108269f27869b97e3e45eeda08b132e5c87567a72da412c8933b2