Malicious PDF — malware analysis report

Static analysis result for SHA-256 095b94b98f7165e7…

MALICIOUS

PDF

67.6 KB Created: 2021-02-12 16:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ad692ba45ea2d87698854ae5937207b9 SHA-1: 13c98b95e5180afb199232278da73a83704e6aa5 SHA-256: 095b94b98f7165e7edb68a51727f0df9241f00ce0e69377f6ddf140a56bba3be
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to 'bologen.ru' which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a song title, aiming to trick users into clicking the malicious link.

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://bologen.ru/wb?keyword=dare%20to%20be%20a%20daniel%20song PDF link annotation
    • http://zobebukore.22web.org/83359482869.pdfIn PDF document text
    • http://jelepasit.22web.org/facebook_apk_free_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/tumokufagu/gcgfyjd/clicker_heroes_codes_for_rubies_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/jiXhhaK/vanoveludifud.pdfIn PDF document text
    • https://cdn.sqhk.co/madosodu/E2jeXhd/free_robux_hack_redeem_free_robux_codes.pdfIn PDF document text
    • http://papotupeti.iblogger.org/cholesterol_medications_powder_form.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/e5ujb5S/vafisosujodozutifub.pdfIn PDF document text
    • http://gajozemexip.22web.org/baldi_s_basics_apk_mod_menu_v3.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/4Vgd353/weekend_warriors_mma_1._160_mod_apk.pdfIn PDF document text
    • http://lifeshop.pro/essential_mathematics_for_economics_and_business_downloadxpzmd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://josegofubusem.epizy.com/93905107722.pdfIn PDF document text
    • http://bevamixebigal.epizy.com/fluke_test_report.pdfIn PDF document text
    • http://fefomuk.epizy.com/reading_comprehension_worksheets_9th_grade_multiple_choice.pdfIn PDF document text
    • http://girigiroret.rf.gd/the_adventures_of_sherlock_holmes_book.pdfIn PDF document text
    • http://datidalumoz.rf.gd/98544909843.pdfIn PDF document text
    • http://pufigaginoxizu.rf.gd/borijogabedapege.pdfIn PDF document text
    • http://xasoxutek.epizy.com/diccionario_biblico_adventista.pdfIn PDF document text
    • http://nitovotiroxe.epizy.com/xumulevefixidopifumoj.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_off0000cdfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDFB 5132 bytes
SHA-256: 724514f29f827f8b57c11fbca82eaf4bd6a4c1cd4ef0215460c9a4cd9f13b3b5
font_01_sfnt_off0000df7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7B 9944 bytes
SHA-256: 500297bb3e17779b038a0a2c379ab47399ac7c16f3d432f1fca4d64f4fbaab58

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