Malicious PDF — malware analysis report

Static analysis result for SHA-256 10cd0bd5a05f05af…

MALICIOUS

PDF

67.3 KB Created: 2021-03-12 03:57:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d5e346625320a0dc3112781c0d8ac2e1 SHA-1: a14ffc3daca90cde2e4bd9ff164cfd07071d6743 SHA-256: 10cd0bd5a05f05af2606349ea8c11da04275169439732df5f25c7354a2fb63c3
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs pointing to external websites, many of which are hosted on disposable domains, suggesting a link farm or phishing operation. The presence of external URIs and the overall structure strongly suggest this PDF is designed to redirect users to malicious sites, likely for further exploitation or credential harvesting.

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://seumenha.ru/strik?utm_term=how+does+midi+over+usb+work PDF link annotation
    • http://pusedoropeseb.66ghz.com/root_checker_for_android_4._0._4.pdfIn PDF document text
    • http://zuduwamani.mypressonline.com/what_is_the_best_suv_for_safety_and_gas_mileage.pdfIn PDF document text
    • http://wexakevo.22web.org/81600146151.pdfIn PDF document text
    • http://iclod.tech/buddhist_philosophy_a_historical_analysisl3fye.pdfIn PDF document text
    • http://vuxokiwi.22web.org/63893476618.pdfIn PDF document text
    • http://gbo.guru/bolens_550_series_lawn_mower_carburetory5frp.pdfIn PDF document text
    • http://remontlegko.info/347348739514r2v.pdfIn PDF document text
    • http://natikolom.site/english_words_list_with_telugu_meaningdsmby.pdfIn PDF document text
    • http://dasopupure.iblogger.org/craftsman_radial_arm_saw_model_113_manual.pdfIn PDF document text
    • http://poguwukobewale.22web.org/35524885343.pdfIn PDF document text
    • http://nibakelenixezas.getenjoyment.net/sarisigukokaxodeg.pdfIn PDF document text
    • https://cdn.sqhk.co/visukodo/iegiCic/flaming_skull_wallpapers_for_phone.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/vepun.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/VsJzijH/vuweref.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kakasis.onlinewebshop.net/88247908689.pdfIn PDF document text
    • http://fiwujugisijema.epizy.com/zusimulegijawi.pdfIn PDF document text
    • http://koburolamugalo.rf.gd/mibekaranum.pdfIn PDF document text
    • http://mefinuxewo.epizy.com/calendar_week_numbers.pdfIn PDF document text
    • http://fomobiwudaz.rf.gd/begujapofigubopepagoje.pdfIn PDF document text
    • http://wepogevadapafa.atwebpages.com/penekaj.pdfIn PDF document text
    • http://xumesata.epizy.com/41428074401.pdfIn PDF document text
    • http://bonanelokuweje.rf.gd/89797580089.pdfIn PDF document text
    • http://goniwenu.rf.gd/getting_the_love_you_want.pdfIn PDF document text
    • http://tolibewi.epizy.com/answer_machine_messages_funny.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_off0000ccd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD8 5048 bytes
SHA-256: 751b24a2a01fc42f1259467d7d715db3ceb87b19a77352032e9b6582de49fc80
font_01_sfnt_off0000ddfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFE 9820 bytes
SHA-256: dee0a1a44f285dbc59dc65078bc76d0f81e74389b7d45908e17fefc27899384e

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