Malicious PDF — malware analysis report

Static analysis result for SHA-256 193183e8d77fba6f…

MALICIOUS

PDF

75.2 KB Created: 2021-03-16 23:23:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 888ac8369b243ac9d442a3a83e941876 SHA-1: 537e04431f61dd81a5d3cb3b9955718c279496e1 SHA-256: 193183e8d77fba6f48280ad5176f68cb284b4abed28ffac50fab430031882fa2
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs and is flagged by ClamAV as Pdf.Phishing.Trojan. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, contains text related to search queries, reinforcing the lure to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://baarspo.ru/wix?keyword=brevard+county+arrests+july+2020 PDF link annotation
    • http://sdek-24.cc/85408972042ad659.pdfIn PDF document text
    • http://deutschebank-meine.com/83165162351wbpwv.pdfIn PDF document text
    • http://letabumo.getenjoyment.net/zazimerovijifuxopufipun.pdfIn PDF document text
    • https://dizakevusarebiz.weebly.com/uploads/1/3/4/5/134581037/dozura.pdfIn PDF document text
    • http://edaeda.moscow/deguruihdhj.pdfIn PDF document text
    • https://gidafefutor.weebly.com/uploads/1/3/4/0/134040883/6113538.pdfIn PDF document text
    • http://bivitajuteje.mypressonline.com/71901258825.pdfIn PDF document text
    • http://fionainthefield.org/list_of_public_universities_in_usa_with_ranking14j9z.pdfIn PDF document text
    • http://zabolojisag.getenjoyment.net/36015284646.pdfIn PDF document text
    • http://fixmarker.fun/dejitojalinuz424xo.pdfIn PDF document text
    • http://giwitap.getenjoyment.net/cavendish_university_courses.pdfIn PDF document text
    • http://devgm.design/clasificacion_de_los_metaloides7o1aq.pdfIn PDF document text
    • http://magicwoolshop.com/how_to_do_troubleshooting_in_computeri19ou.pdfIn PDF document text
    • http://pearhaidhr.fun/18633958095ympc1.pdfIn PDF document text
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/wejujisiwulajojex.pdfIn PDF document text
    • http://zowogusatutojus.mywebcommunity.org/arihant_general_knowledge_book_in_tamil_free_download.pdfIn PDF document text
    • http://hotita.fun/babylon_ad_movie_songs4rrxi.pdfIn PDF document text
    • https://xowozasa.weebly.com/uploads/1/3/3/9/133999953/fawejewotok-diwanuzi-pewenira-fifuxena.pdfIn PDF document text
    • http://natural-shop.info/impossible_quiz_26_answereud4n.pdfIn PDF document text
    • http://gufutaca5.xyz/xisexumosoramalexorowozub2f0a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://minivenema.atwebpages.com/how_to_charge_motorola_walkie-talkie.pdfIn PDF document text
    • http://pefimubis.myartsonline.com/skyrim_mod_list_xbox_one_2020.pdfIn PDF document text
    • http://nebojemesiwi.atwebpages.com/xisoviganaduba.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_off0000e715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE715 5492 bytes
SHA-256: 20fcb38a10f6ffdea649234fe26f26e761f6287cb12ab851f55e409d8e333ef5
font_01_sfnt_off0000f9e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E4 10448 bytes
SHA-256: 70b9a581ceb113b9da2fdee9b2c24cf20f25b1590e31b32460e45c31cf2db87a

Open this report in the interactive analyzer, or submit your own file for analysis.