Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41152313050ac49…

MALICIOUS

PDF

74.7 KB Created: 2021-03-16 12:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 144589a6006a4ccf8fd3de56f9df6172 SHA-1: 205dbfa8d89112213c3501b87f1b34deabfb0e78 SHA-256: f41152313050ac495a1fe0f89af8d694dfea4aea8c0366c7c869c06c57b0bc5a
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 0.9993

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/wix?keyword=quadratic+functions+worksheet+algebra+2 PDF link annotation
    • http://bigno.space/961261249382vw4j.pdfIn PDF document text
    • http://faceit.su/67080720815t64g5.pdfIn PDF document text
    • http://fabunek.iblogger.org/list_of_causative_verbs_in_english.pdfIn PDF document text
    • http://phillipen.online/84488347448pqpgw.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/loss_of_innocence_to_kill_a_mockingbtinjo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f7249408-3571-438d-892d-3eed19137b2d.filesusr.com/ugd/99b222_63af9c6dc2254ea69e433366c84a2cb8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/roserinomefepaxi.pdfIn PDF document text
    • http://manepiri.epizy.com/ipad_mini_1_home_button_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/41282263031.pdfIn PDF document text
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_5ea06bff2d2b4f258610bdbae195ab84.pdf?index=trueIn PDF document text
    • https://05e27880-d5e1-4d3d-8428-ba943e9300bc.filesusr.com/ugd/b56239_03bc5c5bc638499986f094e50ed1628f.pdf?index=trueIn PDF document text
    • https://f1cb2ec4-a82d-4768-8a06-5236a2db220e.filesusr.com/ugd/a2e20a_2cff599d62ba4351a6495eb632f25100.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bufexa/bubble_shooter_free_android.pdfIn PDF document text
    • http://xedaxabefax.rf.gd/cisco_ws-_c3850-_12xs-_s_datasheet.pdfIn PDF document text
    • http://tofikelis.rf.gd/pozofaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/492a937f-420e-4535-a203-58c7d27d3391/zujejurupasejim.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/how_many_sweet_potatoes_do_i_need_to_make_3_cups_mashed.pdfIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_47f1006f0bca46c69904458ba21563e9.pdf?index=trueIn PDF document text
    • https://f0198b83-f3fe-41b4-8315-bacd7eabb238.filesusr.com/ugd/2b3f46_dbc1d620d336472c876e949473453019.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/what_was_daily_life_in_ancient_china.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0580ffb6-315b-42cb-8b41-69b8143bf64a/92967001164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e925b2-fefc-4540-b85b-beaae823854b/46472667934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06bde3fe-364e-4042-9e07-f5d7e6d07865/pekanuja.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_off0000e74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74B 5772 bytes
SHA-256: 643803bdb6a5ee225360986278dc8b4bd061a363e2016d57dc0f9b4cfaca4cb5
font_01_sfnt_off0000fb06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB06 10088 bytes
SHA-256: a844ebd9c2995f2ddd12c124e6369ecdcbf3d57894271b2dc7e9a015cc68475c

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