Malicious PDF — malware analysis report

Static analysis result for SHA-256 109c3942ff116a69…

MALICIOUS

PDF

71.8 KB Created: 2021-03-18 13:28:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee9ccfa612334d565ac53d41535c0f62 SHA-1: 241409da6397ae9adf9d764e86749122adcbdef4 SHA-256: 109c3942ff116a69dac05dbb1d733de3811d52a1de19c07ebbe8af674399b96c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. ClamAV and ML classifiers flagged this file as malicious, specifically as a phishing trojan. The embedded URL suggests a phishing attempt to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/award?keyword=beechcraft+baron+58+poh+pdf
    • http://zdorovie-vashe-vse.xyz/kukowedamesenonokunuwc82q.pdf
    • https://cdn.sqhk.co/wagomito/3hdhayF/blood_pressure_monitor_reviews_canada.pdf
    • http://radulukolataleb.iblogger.org/wusavosepesesed.pdf
    • https://cdn.sqhk.co/mewuxedodi/Oji9hjo/3632946619.pdf
    • http://nubolats.xyz/weekly_maintenance_report_sampleslaq89.pdf
    • https://cdn.sqhk.co/sirijunubi/fqwv6rI/12455479533.pdf
    • https://cdn.sqhk.co/rumobotituda/8hdwtQe/reflective_practice_template_rcpsych.pdf
    • http://yozi.store/how_to_connect_honeywell_vision_pro_to_wifitw11x.pdf
    • http://fofiwafajelerax.sportsontheweb.net/white_space_graphic_design_definition.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4b2dc2ce-1045-4ae5-ae52-3015017a6b85/wajaxudorivitutafodasoba.pdf
    • https://uploads.strikinglycdn.com/files/0c785fcd-f843-4952-8935-16891eab5bcd/92412485209.pdf
    • http://rusakarazixano.epizy.com/tamil_movie_enga_chinna_rasa_songs.pdf
    • http://rususekobijo.myartsonline.com/27717834437.pdf
    • https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_182647b1bc3a4c55b1b810bc69896e80.pdf?index=true
    • https://c4e42e93-254c-4ba8-b495-737f84002742.filesusr.com/ugd/ddb60a_d01588bf9b93410fa3e3ad5d013e7ff3.pdf?index=true
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_4d20b84751c548a9815d5006ef3a4bd1.pdf?index=true
    • https://3437305d-a3f4-4f94-9a63-846dd410f5be.filesusr.com/ugd/ffe76b_f3055b1d78d148389dc12716c7dd0336.pdf?index=true
    • https://fa3f2985-242d-4a4c-93c0-6adbfb259eaf.filesusr.com/ugd/8dbe7a_051f097a1ea54ac68dcd0154276a235c.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7ce.bin
d02dd98fa8f51f6f238715838adad3f91ae53c3e4a9831bfe4abe62ab7f52560
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CE 5540 bytes
font_01_sfnt_off0000ea9e.bin
d128db7ee0a5efabf257ab9cd3e87047a36ad755fbb1d1407d91e6e287d2ebc4
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9E 11592 bytes