Malicious PDF — malware analysis report

Static analysis result for SHA-256 47da038e4de70dc5…

MALICIOUS

PDF

87.4 KB Created: 2021-03-14 12:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1da6cc95c0f223e408900c9eb265a341 SHA-1: 1ce95b1a70ada132317877453b29588e967b1c46 SHA-256: 47da038e4de70dc5448c7ec774234eacbaf6b585326252a2a573428dc86c0534
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, and one prominent URL related to 'unblocked games'. This suggests the document's primary purpose is to redirect users to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://jacksth.ru/wix?keyword=unblocked+games+combo PDF link annotation
    • http://goxatut.iblogger.org/79167320608.pdfIn PDF document text
    • http://tozepimituxagus.iblogger.org/26188943523.pdfIn PDF document text
    • http://barekokodigak.iblogger.org/bigger_faster_stronger_documentary_free.pdfIn PDF document text
    • http://wuxijuvusif.22web.org/ace_academy_books_for_gate_mechanical_engineering.pdfIn PDF document text
    • http://xulenegutuwovi.iblogger.org/ambulance_uniform_epaulettes.pdfIn PDF document text
    • http://maxawasoreveta.iblogger.org/17653973241.pdfIn PDF document text
    • http://jodesomuxuduzu.22web.org/kaspersky_antivirus_cracked_version_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mesovinofezesat.epizy.com/stylesheet_css_in_html.pdfIn PDF document text
    • http://nifuxezelepet.epizy.com/vevipamalojovijisa.pdfIn PDF document text
    • http://pinokogojoxajim.epizy.com/xesiwadasemamifisonumez.pdfIn PDF document text
    • http://zumaruzafomadik.rf.gd/lapizopawe.pdfIn PDF document text
    • http://fazomexaboru.rf.gd/barbie_cooking_games_for_mobile.pdfIn PDF document text
    • http://gevorewububew.epizy.com/9877714642.pdfIn PDF document text
    • http://voratibix.rf.gd/96553762587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/118d848b-47ed-4a73-931c-9bd6078d4c6d/39647767660.pdfIn PDF document text
    • http://xevorerokune.epizy.com/psychrometric_chart_high_temp.pdfIn PDF document text
    • http://lokimutopilar.epizy.com/91104261728.pdfIn PDF document text
    • http://buwomir.epizy.com/88355994655.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/betta_fish_vector.pdfIn PDF document text
    • http://repuvamiperubo.epizy.com/nhs_back_pain_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/history_of_china_podcast_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28cb208e-cc08-41f5-a3ce-52c868e530b1/what_is_the_best_ammo_for_a_marlin_30_30.pdfIn PDF document text
    • http://welolazudadiv.epizy.com/ziridalizesamikusu.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/chakri_songs_naa_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b0ee610-d110-4577-a592-23e7cfaf5045/kowedajiwozakadedusil.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/luwuzas.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10713 5016 bytes
SHA-256: 8e68d92c32f117545ef10125b66be80c525fec826af0b3a90182d065814cf1b0
font_01_sfnt_off00011803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11803 11964 bytes
SHA-256: 783505c19c75c2884e5e81fe24c2b585023aed09bfd55b12b39196c034871a80
font_02_sfnt_off000140a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140A6 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333