Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acbc68b5116c8b0…

MALICIOUS

PDF

71.5 KB Created: 2021-03-10 03:17:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 58f11a41d7a3d836bd8a53cc8049f2b5 SHA-1: f6167c4d0b2575177187c289360e1b44e29a9b0b SHA-256: 9acbc68b5116c8b01a554ad60cf2c34a9168dce0f0404188838e5c9b52241206
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to redirect the user to a harmful site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dugedepap.ru/award?keyword=cakewalk+sonar+x3+producer+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465707/normal_6041184258fb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493282/normal_600ffc7aec81f.pdfIn PDF document text
    • http://agent-spv.space/snake_game_in_c_with_graphics_source_code29ztt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463010/normal_60212abf05645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_6038f2718fd56.pdfIn PDF document text
    • http://bizbize-yeteriz.org/paseteu03ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490929/normal_601e104910728.pdfIn PDF document text
    • http://voicebftyi.com/wedunibanebodawomanigorir78sq4.pdfIn PDF document text
    • http://tumbochka.space/kudojutejirutiworoxagew6n41.pdfIn PDF document text
    • http://znalomstvavip.site/university_calculus_early_transcendentals_4th_edition8n6q1.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/a9i8jg1/small_business_ideas_that_make_good_money.pdfIn PDF document text
    • http://praktika-ingenieur.com/modular_origami_rose_cubeig55q.pdfIn PDF document text
    • http://dimax-matrasy.ru/goterans1m9n.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/ZOvDlig/her_story_web_series_cast.pdfIn PDF document text
    • http://storeeuro.info/easy_money_payday_loans_onlineo9u8b.pdfIn PDF document text
    • https://cdn.sqhk.co/gesimefav/hdQibjg/centipede_bite_cat.pdfIn PDF document text
    • http://pearhaidhr.fun/ragnarok_eternal_love_alchemist_homunculus_guide8uvy6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/graco_pack_and_play_playard_mattress.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/36336677083.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/bidunosutajofufinoxavu.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/how_much_does_a_health_information_technician_make_an_hour.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/it_associates_salary.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/internet_manager_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/66483876381.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD27 5596 bytes
SHA-256: a6cf432a25a1297ca6d6403aca0c6acf1c24d8cb7125cd180b70c64845056ab4
font_01_sfnt_off0000f030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF030 9460 bytes
SHA-256: f056c33b3b816f1156d570c8615726ba33d44367ab5793a3951cf6264170fb22

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