Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7476014ced02e6e…

MALICIOUS

PDF

80.4 KB Created: 2021-03-01 03:07:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c10e9792cd50bdb62e7881a3dd405ef2 SHA-1: 76796b5fa2780125f2211ce31289b96a3dce2d49 SHA-256: b7476014ced02e6eab482a084a319d13b66a57c791570296e6f4b977b7a40c6a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious sites for further exploitation or credential harvesting. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=unit+5+study+guide+biology
    • http://gowanenutik.mypressonline.com/bible_audio_genesis_1.pdf
    • http://giwitijudaleka.mygamesonline.org/metodologia_de_la_investigacion_sampieri_4ta_edicion.pdf
    • http://mapotilij.mygamesonline.org/filepi.pdf
    • http://waliduv.mypressonline.com/kenmore_air_conditioner_filter.pdf
    • http://pazujiz.mygamesonline.org/2002_mercedes_e320_service_b.pdf
    • http://balegetiwep.mywebcommunity.org/g_shock_rangeman_band.pdf
    • https://cdn.sqhk.co/lojibuwe/Whjzjc2/92412294482.pdf
    • https://cdn.sqhk.co/xewazezikufi/6hcjiig/23072337464.pdf
    • http://finonit.mypressonline.com/hadoop_word_count_program_in_windows.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fetekovabu.onlinewebshop.net/nespresso_aeroccino3_milk_frother_not_heating.pdf
    • https://s3.amazonaws.com/marimejerebo/50440206073.pdf
    • http://vorisenunajix.myartsonline.com/lord_of_the_flies_important_quotes_chapter_1-3.pdf
    • http://vusegax.rf.gd/dirt_devil_pro_express_ud70170_manual.pdf
    • http://vawerudarasikow.myartsonline.com/sun_tzu_know_your_enemy_meaning.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff19.bin
e8ca031fe006410aef165f0bc8abecdae1257f276d3c6af87b076bb5460fd238		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF19 5044 bytes
font_01_sfnt_off00011060.bin
dd150f5cad5d87199a917e47f73df794ef2b6d738a9f8dae0ac4a144d086ab1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11060 10636 bytes

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