Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d3812d49d6e72c…

MALICIOUS

PDF

84.5 KB Created: 2021-03-04 09:14:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: de03a93edb46fdcdebbd3e4c518a0b8f SHA-1: d0ea684a5fd0c414710976954bb8b56278b98583 SHA-256: 31d3812d49d6e72c88ce5553c8cab5e0071b0ae042c356ccb620d4fba5bdca1b
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains an embedded URI pointing to 'https://lozipotod.ru/wix?keyword=the+amber+spyglass+pdf+online', which is likely a phishing lure. The document body is heavily obfuscated, but the presence of the malicious URL and the detection signatures strongly suggest a phishing or malware delivery attempt.

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://lozipotod.ru/wix?keyword=the+amber+spyglass+pdf+online PDF link annotation
    • http://br1.red/sample_performance_evaluation_phrases_for_employees7o8tr.pdfIn PDF document text
    • https://cdn.sqhk.co/rexukewanej/iO7Ygcr/dragonvale_world_dragon_evolution.pdfIn PDF document text
    • http://kersita.space/monster_trucks_die_casts6pw4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426073/normal_5fcdf26f8b6f9.pdfIn PDF document text
    • http://ttop-shop.com/how_to_deal_with_potty_training_regressionieblu.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/ZjeJbhe/refivarofapenexexu.pdfIn PDF document text
    • http://dofujifeluradep.medianewsonline.com/kenmore_700_series_dryer_owners_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/tanusulirava/CheRhcB/vanuduvaxewazugi.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/9jchd2g/battlefront_heroes_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/uid8dlR/sobotepimegagev.pdfIn PDF document text
    • http://eeuuurrrrr.space/jikidulinusumma08.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://pojozija.onlinewebshop.net/wevixugumuwijaveninobo.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/ionic_reactions_lab_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/android_development_tutorial_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/55219757119.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/85599121654.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/new_bodo_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/sebir.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/juzasigiraxosanile.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_off00010195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10195 5352 bytes
SHA-256: 8560c1c8e29c6b890ee76aa375e87decd410e3aa0fb662f19b8526e2515424cf
font_01_sfnt_off00011396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11396 10116 bytes
SHA-256: beda9e4984c7539acdc09ae1e0774eb9c13c20a2d039055f4810e89bba82b1fd
font_02_sfnt_off0001362e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1362E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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