Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b53795987b29246…

MALICIOUS

PDF

73.0 KB Created: 2021-03-24 17:11:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 58377e37383cbce674e906ee43d19042 SHA-1: 347327b2e0837f1f7f77a11de9bb6840b0c63577 SHA-256: 8b53795987b292463e55d536925c356ac2c521f364c26cdff143a63538dad492
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, including one pointing to 'dugedepap.ru', suggesting it's designed to redirect users to potentially harmful websites. The document body, though heavily obfuscated, appears to contain keywords related to games, likely as a lure.

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://dugedepap.ru/wix?keyword=dust+game+unblocked PDF link annotation
    • http://retapadu.medianewsonline.com/how_can_i_reorder_pages_in_a_file.pdfIn PDF document text
    • https://cdn.sqhk.co/rukokota/jad5fhj/small_business_plan_sample.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402711/normal_6045f60976eba.pdfIn PDF document text
    • https://cdn.sqhk.co/bumadawab/fEdlifd/rival_stars_basketball_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kusewupudin/hqQgdif/lebavix.pdfIn PDF document text
    • https://lenapejasuma.weebly.com/uploads/1/3/4/7/134749539/vobovelab-zuzitowisi-gomijodanul-wexemevebexa.pdfIn PDF document text
    • http://loduxoxoba.22web.org/78786807232.pdfIn PDF document text
    • https://wuxipatinux.weebly.com/uploads/1/3/4/6/134662372/e36730a4dc6e24.pdfIn PDF document text
    • https://gizigega.weebly.com/uploads/1/3/3/9/133999267/2564157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453764/normal_6052082832495.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/didggnL/shabby_chic_mirror_bed_sheet_sets.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jikeroti.epizy.com/25786969557.pdfIn PDF document text
    • http://semowomeso.onlinewebshop.net/injective_functions_examples.pdfIn PDF document text
    • http://giwolexuki.rf.gd/bifuwavi.pdfIn PDF document text
    • http://wewuvizab.epizy.com/kotujupujiboganaxabutixux.pdfIn PDF document text
    • http://xefesogojodegu.epizy.com/pejav.pdfIn PDF document text
    • http://katutexe.epizy.com/26415706697.pdfIn PDF document text
    • http://lejutijerikav.rf.gd/zoxogotewowolawomunipe.pdfIn PDF document text
    • http://sijurajogo.epizy.com/printed_faux_leather_fabric_sheets.pdfIn PDF document text
    • http://fapizof.rf.gd/vovagisufapemumerim.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC38 5364 bytes
SHA-256: 3356e8196f3bd1c434a6024fd12d31976cdd8b17887253a5a42d8b366f88f9c9
font_01_sfnt_off0000de6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6E 10284 bytes
SHA-256: a7a4938e9cbbdb43cf2b7fdaabc01c4a78a35f10782cafad800296fbfadf07da
font_02_sfnt_off0001019a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019A 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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