Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3378f3930efea9f…

MALICIOUS

PDF

80.3 KB Created: 2021-02-10 09:07:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ae396110371c513fac7735d3dc109cf3 SHA-1: d2d6d1f249df3eac8180ac97734bebd4540980a7 SHA-256: a3378f3930efea9f2f50165054adb54bcbdd7742727d007222b3c9e08f1e8d9d
96 Risk Score

Malware Insights

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

The sample is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a 'snow report'. No scripts were extracted, but the presence of external URIs and the high confidence scores suggest the PDF is designed to redirect users to a malicious site.

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://baarspo.ru/aws?utm_term=le+massif+snow+report PDF link annotation
    • https://cdn.sqhk.co/nezerozara/gcicVjd/carnivores_ice_age_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389568/normal_5fdc5f4956ebd.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/cY0ifha/lego_super_mario_character_packs_series_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_601b0641ea3c9.pdfIn PDF document text
    • http://leadtop.co/3280832685kj4nw.pdfIn PDF document text
    • http://pexiwaz.iblogger.org/lexile_levels_to_guided_reading_levels.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/cbMjQow/35949904431.pdfIn PDF document text
    • https://cdn.sqhk.co/zomitokemip/hbgfmjj/54251943983.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385028/normal_6007399b94a00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448094/normal_5fff22f5cfd1e.pdfIn PDF document text
    • http://medgaj.com/179040277864wa5o.pdfIn PDF document text
    • https://cdn.sqhk.co/jezumasulej/d4riage/46855188405.pdfIn PDF document text
    • https://cdn.sqhk.co/tudobele/hfjrNjf/banco_do_brasil_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/DmgePhj/69519925686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386081/normal_5fd63e64551df.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/hgjGigu/zombie_outbreak_simulator_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wopidaxiwuk/Ao8iagh/automation_machine_builder_salary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kewugozosefo.epizy.com/cantaloupe_planting_guide.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_off0000e8b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B8 5048 bytes
SHA-256: e785576dabfec41afe7e7b75368d6dd7a1dabcfa06f3659866b669bf3a10e1c2
font_01_sfnt_off0000f9e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E2 10724 bytes
SHA-256: e150332105fc2e095ed44a53af9a19da0abc26c017d57a4fe16f507c19b65f5b
font_02_sfnt_off00011e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E44 16260 bytes
SHA-256: efcda8d0ea25d013786d5cbe7517ed73f55ce1dfb17c74525e0554ea8b1a3d3d

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