Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc536c2a76aa0e91…

MALICIOUS

PDF

79.0 KB Created: 2021-03-16 16:07:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2b0aa6e1a0b34a8f41d548c647cbbb14 SHA-1: cbf1c9ddb332056e1cd8857071e5ec810b5354b9 SHA-256: cc536c2a76aa0e91950cc0dbf86b49713538a237120e1358832be382195d1e9c
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 phishing or malware distribution attempt. It contains an external URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external links and the overall detection suggest it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wix?keyword=the+cartel+3+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455902/normal_6007ab924f1a7.pdfIn PDF document text
    • https://dufubixapitosig.weebly.com/uploads/1/3/4/5/134503348/fajasozagudotitixo.pdfIn PDF document text
    • https://cdn.sqhk.co/sojetaji/wggegeE/k_nguyen_huy_n_tho_i_pc.pdfIn PDF document text
    • https://mifurujuxix.weebly.com/uploads/1/3/3/9/133997148/480e265b2d8db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425926/normal_602aafe491393.pdfIn PDF document text
    • https://cdn.sqhk.co/tamenotu/3hdr0ie/94875125053.pdfIn PDF document text
    • https://vikabedegopeve.weebly.com/uploads/1/3/0/8/130874339/rudivegijil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465025/normal_604842123e7b3.pdfIn PDF document text
    • https://cdn.sqhk.co/wedowetaso/jiggha5/zelda_parallel_worlds_rom_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab6100b7-c33c-474a-9098-acae83bfeb3d/xutogaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f071d02e-120c-432e-a72a-9ad98a1b13bc/minecraft_bookshelf_enchanting_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed51acc4-c0eb-4c6d-915c-aa546f2d7cca/what_is_a_good_gre_score_for_law_school.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/pdf_to_word_converter_free_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5855807e-445b-419e-9e49-570cdda529fd/numokuxevogex.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/bersa_thunder_9mm_holster.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/nibumim.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/westworld_main_theme_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/aladdin_2019_ost.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_off0000e317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE317 5176 bytes
SHA-256: ba2b36404462b189cb0923b88a2949c252a3c9de80c13058382340fbf9269fb1
font_01_sfnt_off0000f4b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B2 10852 bytes
SHA-256: 4bfc832671c77b14cb214cb0bca17ff5200ee391e6b673f99b574f3078f9482b
font_02_sfnt_off000119e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E7 16144 bytes
SHA-256: 9fd528bdd8c1884a6e15ee1af82f6d8490f5509dabfad6ef60b319b19129b13c

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