Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2deef34751a359…

MALICIOUS

PDF

72.2 KB Created: 2021-03-19 04:28:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: ec579fd2b66ed47f50ee9bbb33600e66 SHA-1: 68489b1504c6c34f867e7d8b12051a7e93457447 SHA-256: fc2deef34751a3591bfc5c6950f3db01b5b7e471c7dcc71df1ca7963d65488ba
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to disposable domains and link farms, indicating a strong intent to redirect users to potentially harmful sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, suggesting the PDF is designed to host many links on low-reputation domains.

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://nipisod.ru/award?keyword=analytical+mechanics+of+space+systems+schaub+pdf PDF link annotation
    • http://sollabs.xyz/vefajuvepetisidebanebo55x8a.pdfIn PDF document text
    • https://bezofaxifi.weebly.com/uploads/1/3/1/6/131606652/8f5ae41ac4a726.pdfIn PDF document text
    • http://instapodarok365.site/zoology_book_by_miller_harley_freejdwap.pdfIn PDF document text
    • http://begdas.fun/67203731171sxmoh.pdfIn PDF document text
    • https://mitesevutij.weebly.com/uploads/1/3/4/7/134717039/1635270.pdfIn PDF document text
    • https://xekesaxi.weebly.com/uploads/1/3/4/3/134317917/borijukote.pdfIn PDF document text
    • https://jufukakoxojopop.weebly.com/uploads/1/3/4/3/134317893/8efdedd67.pdfIn PDF document text
    • https://jafoxexaromomev.weebly.com/uploads/1/3/5/2/135296472/xijabel.pdfIn PDF document text
    • https://talunijepi.weebly.com/uploads/1/3/4/5/134599753/neginafivez.pdfIn PDF document text
    • http://kraftmann.su/volarimarikuvife255r.pdfIn PDF document text
    • http://grigolia-studio.ru/xamotebilikugipavufagulek5bmg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://savekuf.rf.gd/31067562273.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/5685639927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92c242bf-4134-4a5a-9b85-9a02f4fe6850/how_to_analyze_data_in_quantitative_research.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30020961-1cb0-4e20-a075-dd05d21d0b89/how_to_clean_vent_under_microwave.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/35948895812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dae708a-7fb5-4db7-8251-2639b9b5b061/ruzenunuwakakele.pdfIn PDF document text
    • http://zorogeloma.epizy.com/36881204138.pdfIn PDF document text
    • http://sewasijibakel.epizy.com/mevona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b45bf809-6723-40df-9db4-347f323085ae/34686514895.pdfIn PDF document text
    • http://pumuroxojab.rf.gd/what_food_should_i_stockpile_for_emergencies.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/happy_new_year_song_mr_jatt.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_off0000dcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDD 5528 bytes
SHA-256: 7e7b3a4cdea869d07f09a7cc44abd73101a81baebe7855e50521fa6bdad9c7e1
font_01_sfnt_off0000ef8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8C 10664 bytes
SHA-256: 878435826cf13982bd518a04f5647b807649c69f4ec9a200c53b0e959117b3e1

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