Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c1f4ce7f881dcd…

MALICIOUS

PDF

84.6 KB Created: 2021-02-25 13:33:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8bc8a6a744142d0d32215d70695cb164 SHA-1: af20acd68bb2150adde973faa8080f0e5867bf0f SHA-256: 19c1f4ce7f881dcd25fbb0e2150ade9114c6ed12e952ccd32e56a9d418160225
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, suggesting a malicious intent to redirect users. The document body, though heavily obfuscated, appears to contain a search query lure, indicating a phishing or redirection attack.

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://jottigo.ru/strik?utm_term=what+is+bruce+lee%2527s+wife+doing+now PDF link annotation
    • http://safijejog.mygamesonline.org/xadabomabajakoborowanupe.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/zafuna.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/45091269113.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/ifQjegg/vida_saludable_frases_cortas.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/raluw.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/rt-ac68u_user_guide.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/nilafunixuxilimoxavixek.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/oldways_mediterranean_diet_brochure.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/metal_gear_solid_2_official_strategy_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jorisuzil/gsUhhji/carx_drift_racing_online_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/tijatabov/nhCiijb/kadikemiri.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/la_casa_de_los_espiritus_pelicula_completa_cuevana.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pupovedifa.rf.gd/illustrator_freeform_gradient.pdfIn PDF document text
    • http://nelipofamarul.epizy.com/promissory_note_template_example.pdfIn PDF document text
    • http://logaraba.rf.gd/baxugewovonogakesawotokap.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/waruwapepemo.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/44565637473.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/lord_of_the_flies_important_quotes_chapter_1-3.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_off00010d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D87 5564 bytes
SHA-256: 5cdc284040e89bf8d1dcc73a3901990511c116250eb98fe650f80c1171cff996
font_01_sfnt_off00012089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12089 10604 bytes
SHA-256: f2c92e18e66dbf24140f765294c67648120a6b893bf440230a321dc9ecbcdcd0

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