Malicious PDF — malware analysis report

Static analysis result for SHA-256 56fb4dd82dc8f231…

MALICIOUS

PDF

76.3 KB Created: 2021-03-22 13:41:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 720aafdfcfaf36a540f27c1f85c5e14a SHA-1: 700e6df1600268be84a89b0548452286d01e5e0b SHA-256: 56fb4dd82dc8f231160002380aaa19f21ca50b8f1a2a78cd0247a142299a921f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=samsung+galaxy+prime+plus+price+in+tanzania PDF link annotation
    • http://beremoter.online/interlocking_and_integrated_accounting_systemo5e19.pdfIn PDF document text
    • https://cdn.sqhk.co/pulununese/eL3nhie/bubble_zombie_magic_trick.pdfIn PDF document text
    • http://krokoboko3.xyz/nakijixakeberumomwup3h.pdfIn PDF document text
    • https://cdn.sqhk.co/xovijanovupu/Ah0jjjc/kidilewejezodagivev.pdfIn PDF document text
    • http://diwolekeku.22web.org/how_to_change_battery_in_3m_filtrete_thermostat.pdfIn PDF document text
    • http://dafitunexen.iblogger.org/toxowifikosazanes.pdfIn PDF document text
    • http://fadekitexef.iblogger.org/90426850258.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/arihant_integral_calculus_downloadk3wj5.pdfIn PDF document text
    • http://zowuzigokov.22web.org/bubble_wings_offline_bubble_shooter_games_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3465328d-eb21-4af5-a94e-b8fdacefaafa.filesusr.com/ugd/c63bf9_7e6b26fd7cc2438db6567717e0578c12.pdf?index=trueIn PDF document text
    • http://dexixikix.epizy.com/tijew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb39084c-ed6f-4877-9b09-d10167d48cc6/krups_964_filter_basket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c653adbc-4311-411b-ac38-5c8ef92a91aa/how_to_program_a_genie_model_1024.pdfIn PDF document text
    • http://mamitepibo.epizy.com/84439668286.pdfIn PDF document text
    • http://lorofamatunex.rf.gd/varomevomonodiki.pdfIn PDF document text
    • https://2c8134a4-d865-4da1-8961-c755d7242105.filesusr.com/ugd/6dcf04_7858d11bf3574b9882f6e587822d5a64.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e331c81-d049-4526-a050-8bbb02b19814/what_is_the_theme_of_the_short_story_the_monkeys_paw.pdfIn PDF document text
    • http://xawavejemefo.epizy.com/sazugavireboxefilajaxedo.pdfIn PDF document text
    • https://47a25507-5c4f-4e73-9b7c-0c49514c8174.filesusr.com/ugd/e00bd3_12caa6dfc13845c69e509aa64677e31d.pdf?index=trueIn PDF document text
    • http://fusatepalu.epizy.com/australian_tv_guide_sydney_nsw.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_off0000e883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE883 5576 bytes
SHA-256: fa714b6ebf07bd892685e1467ee826e154e747263f1a0dc208d54b1fea1ff834
font_01_sfnt_off0000fb79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB79 11284 bytes
SHA-256: e79098cceee486293d560c560eea4fcf20d7a2bd31b0d343caa32bb309135103

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