Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a41862b2c13e98e…

MALICIOUS

PDF

347.0 KB Created: 2021-05-04 07:27:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 62ff2889de5c6bf827197a037a35350e SHA-1: 11257e5cddcfedbec0dac4973e9463d1f00cb224 SHA-256: 5a41862b2c13e98e84334e6bf9e601baad31410d4ea09faf052432c1bcf66a2e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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://crophysi.ru/strik?utm_term=fahim+the+little+chess+prince+full+movie+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459059/normal_5fd8507d82974.pdfIn PDF document text
    • https://cdn.sqhk.co/vizelupavew/dggfTyG/taxagolapidin.pdfIn PDF document text
    • http://letgtma.bid/how_to_make_a_kaneki_mask91hek.pdfIn PDF document text
    • http://itravelimpressions.com/how_to_clean_filter_on_mitsubishi_air_conditioneritu2k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385614/normal_60002263070ff.pdfIn PDF document text
    • https://cdn.sqhk.co/gidetixi/ghHFgc0/the_maze_runner_2_book_review.pdfIn PDF document text
    • http://fitnesspack.net/why_wont_my_trimmer_startcm391.pdfIn PDF document text
    • http://legalvictory.group/2013_dodge_avenger_oil_amountb9urm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450864/normal_601700b1bb08c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445743/normal_601f8404c33a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481272/normal_6013a3a227c41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479460/normal_5fdadaab99c2d.pdfIn PDF document text
    • http://onlinetyz.xyz/87389723557blu6r.pdfIn PDF document text
    • https://cdn.sqhk.co/jofutagi/jjhgeii/ruribi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407066/normal_6039fb850992b.pdfIn PDF document text
    • https://cdn.sqhk.co/lusajiki/l6hdgik/dental_office_assistant_job_description.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://filawobabadi.epizy.com/jukarebuzave.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/synonyms_and_antonyms_worksheets_for_grade_2.pdfIn PDF document text
    • http://dulawazege.rf.gd/liquide_cphalo_rachidien.pdfIn PDF document text
    • http://sesilav.rf.gd/format_of_vertical_balance_sheet_and_income_statement.pdfIn PDF document text
    • http://zezogif.rf.gd/binary_subtraction_using_1_s_and_2_s_complement.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/55950193066.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003e313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E313 90480 bytes
SHA-256: 0437c60edc5e7abf446c13cadf0f67311896761b3bdf9b38fe4291b776d1ff9c
font_01_sfnt_off0004f549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F549 5504 bytes
SHA-256: 4032e9f1c3aea7acd137542c59720719eab92892e9a35aed80c3a4534573e3e6
font_02_sfnt_off000507e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x507E5 11020 bytes
SHA-256: fa583daeb3bb21c40ce088ba18b7aa1caff877431170ec6d95813e5639f03ff0
font_03_sfnt_off000526b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x526B8 18908 bytes
SHA-256: 634aa5bdb5dd47571412c7435a7de784f2f95d973498671d943ffc572f339c0e

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