Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b696ae10f11da5…

MALICIOUS

PDF

78.9 KB Created: 2021-02-27 16:24:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d27ac27b6d6d41b6281c26227252acb7 SHA-1: aceadc3d679a7a25248744c136eac17eedae9845 SHA-256: 01b696ae10f11da58b4418793c57e4b012ef0010095f4f83ca659cd91d7284e1
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a movie, aiming to trick users into clicking malicious links.

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://dafemum.ru/award?keyword=ver+el+diario+de+greg+3+pelicula+completa+en+espa%25C3%25B1ol PDF link annotation
    • http://fruitik.space/favij8umda.pdfIn PDF document text
    • https://cdn.sqhk.co/vekunego/ig4jcmo/service_learning_projects_for_elementary_schools.pdfIn PDF document text
    • http://vujereki.22web.org/28_days_later_full_movie_300mb.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/hjdhaha/guropadedebujura.pdfIn PDF document text
    • http://rikororasikenek.iblogger.org/steve_madden_platform_sandals_outfit.pdfIn PDF document text
    • http://webmastervlad.ru/43433446323ifiul.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/jghhggS/fonemasika.pdfIn PDF document text
    • http://filmera.ru/tujhe_chaha_rab_se_bhi_jyada_song_downloadio3ek.pdfIn PDF document text
    • https://cdn.sqhk.co/xezafube/1ghMHCQ/candle_volume_chart_tradingview.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fejusadifidexi.epizy.com/crusaders_of_light_pvp_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/75868262335.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/motorola_arris_sb6141_setup.pdfIn PDF document text
    • http://javuxanasojajex.epizy.com/militusususiduxunub.pdfIn PDF document text
    • http://romufadi.epizy.com/kasilobenemagavu.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/5673942707.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21C 5732 bytes
SHA-256: 8ebe3b53c975dabf8ad57f8d4a9cf34a6aa339e675c6cde7b8ead389f6ae1e80
font_01_sfnt_off0000e547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE547 2532 bytes
SHA-256: 394c240c8e5f3aadab1a709b55e5cbcc1b47e189138539bd4f0501eb3f16b16f
font_02_sfnt_off0000f05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05B 11440 bytes
SHA-256: 293a58edb3ce1afbac1d5dc50210d89362a123409ef68a7f63a2dae5a445cdc0
font_03_sfnt_off0001158f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158F 16168 bytes
SHA-256: e5458d7b6d82539349b17fc4713a17e1381d471255c72d9f8116b7c86e08c443

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