Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ad75dd7bf233ed…

MALICIOUS

PDF

84.9 KB Created: 2021-03-08 07:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4409fdac5a4e4c821404c0fc9889c28d SHA-1: 5491de7ed395d36ef529a24d6316b514b49ea93f SHA-256: e2ad75dd7bf233edb9e462a7486f8db25ed40c2cc2f135bf424884d1eff67efd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many pointing to disposable domains, and uses a lure related to a movie sequel trailer to entice users to click. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host many links on potentially untrusted or disposable hosting, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jacksth.ru/strik?utm_term=the+shining+sequel+2020+trailer PDF link annotation
    • https://baginemesurewis.weebly.com/uploads/1/3/1/3/131380932/7246561.pdfIn PDF document text
    • http://rezisekuvaz.mypressonline.com/mimupurudogenapot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410727/normal_5fda236a1345f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389376/normal_6009d39457c10.pdfIn PDF document text
    • https://lugonejiborin.weebly.com/uploads/1/3/5/3/135336075/63941cba464df.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/drum_rudiments_poster.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/goat_simulator_free_download_for_windows_7.pdfIn PDF document text
    • http://girepodemaz.getenjoyment.net/how_to_say_curse_words_in_latin.pdfIn PDF document text
    • http://lenusabipowezo.getenjoyment.net/samsung_ml-2165w_drivers_free_download.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/15197005085.pdfIn PDF document text
    • https://gawujura.weebly.com/uploads/1/3/5/3/135325150/sijub-suvakek.pdfIn PDF document text
    • https://vidokabotofasi.weebly.com/uploads/1/3/4/8/134868814/a2084a186f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473030/normal_5ff55edab9b1f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/96f45475-52fe-4c0a-8d11-9aadda271674/charbroil_grill_brazilian_steakhouse_prices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/171d5ca2-a83f-4c3b-99e1-5c13d31a7169/abc_worksheets_cbt_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa22c649-0ee4-49c8-a51e-d3b52c68daaf/gimpy_meaning_in_gujarati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df914cdc-69c0-4ff3-beaf-fa7ff82a2822/44089185365.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/what_are_3_examples_of_conjunctions.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/nexogonitizegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e6aabac-5212-4d56-8a49-3000717314ac/kuwudatomu.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/apasl_hcv_guidelines.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_off00010d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4A 5296 bytes
SHA-256: 2d75ce765f94a329cdc1d30fef0ea6af048303a76a041f754ea80e020cfeea9b
font_01_sfnt_off00011f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F44 11264 bytes
SHA-256: e93bd7fa298886aa62ade5af87ac0d23e1e60542cd97dad8869799c3f14ec8fd