Malicious PDF — malware analysis report

Static analysis result for SHA-256 19fc92664d187d40…

MALICIOUS

PDF

78.6 KB Created: 2021-04-02 01:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 9020152e89d6c91296ae7d96b9ad01aa SHA-1: 9ce5f7352b3a591b89bc0c5414780d0668e4736e SHA-256: 19fc92664d187d403842c27738d08c7c24daf9da4168b47d9154d62aa9848385
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 URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests it is presented as a 'workbook'. The presence of multiple external URLs indicates a phishing or malware distribution attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/strik?utm_term=puntos+de+partida+workbook+pdf PDF link annotation
    • https://cdn.sqhk.co/dizukenepu/hiRsyhd/goxejepudofisizu.pdfIn PDF document text
    • https://cdn.sqhk.co/kifateten/FMLaDgg/snowman_video_call_and_chat_simulation_game.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/ggxiehf/465002284.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/CBzRJjj/4831920716.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/iafSgeC/anti_flag_broken_bones_lyrics_ubersetzung.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/QBiiNhg/domino_smash_breaker_challenge.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/Ggfncid/sulfuric_acid_and_sugar_lab_report.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/hhbjcMv/57908976827.pdfIn PDF document text
    • https://cdn.sqhk.co/mowasikuso/t7j1dii/dajogim.pdfIn PDF document text
    • https://cdn.sqhk.co/sowumavag/eujhiNE/mutipuvigikejizid.pdfIn PDF document text
    • http://xobuxok.22web.org/bibar_2006_bengali_full_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/rebosuvut/KfybghC/hollywood_movies_imdb_rating_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/ijjaijR/male_to_female_voice_changer_app_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/bogofuvizibu/Ci41iaV/18680004836.pdfIn PDF document text
    • https://cdn.sqhk.co/kuniremolu/Jighbsz/sinupediwadetem.pdfIn PDF document text
    • https://cdn.sqhk.co/rarirawibowo/hgSIoBF/kojipow.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/tgihhUp/malidapoz.pdfIn PDF document text
    • https://cdn.sqhk.co/karadirimose/njc5jHj/love_songs_ringtones_telugu_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koxaxinum.epizy.com/how_to_make_a_behaviour_management_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b51e79a1-f333-4b8c-ae99-8b8d434f4d66/kaba_simplex_lock_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe3e8a97-6e88-4d85-9c37-4a182ba41a58/69484420458.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 5300 bytes
SHA-256: 83bff5dbc8af3ad051ca556063c5a891cc99b1ca5fbe5a480b950f2a92614a56
font_01_sfnt_off0000f24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24C 10816 bytes
SHA-256: ed1bb0b9268b9a0690a27a0a1e58d97f26553f6a055489e302fdbe6ccdf0ffb4
font_02_sfnt_off00011792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11792 16084 bytes
SHA-256: 29b8095464fa9501f2379a4c43ca3ba1b1df604f87f2abcbe11fa9bdafb8ec10

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