Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed695bee0a4d07d4…

MALICIOUS

PDF

71.6 KB Created: 2021-04-04 01:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c04b9dcbeefc51fd9726bb01f89e492 SHA-1: af23d55af8f930609499a2f9c21b585fed456ad4 SHA-256: ed695bee0a4d07d4daa6abf0bd40f41b58d0fd7460c3a4192c15a4d863fb76bd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically identified as a 'PDF_SEO_LINK_FARM'. The presence of a malicious ML classification and ClamAV detection further supports its malicious nature. The primary malicious URL, 'https://soxebez.ru/wix?keyword=powertec+workbench+manual', suggests a phishing or scam attempt disguised as a manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=powertec+workbench+manual
    • https://cdn.sqhk.co/rovukupovumo/HD5ggjj/94444804605.pdf
    • http://on-arenas.com/1001908191kgh4b.pdf
    • http://copyrightsupporthelpcenter.com/kiwaxavarufukwo0.pdf
    • http://jekefidaz.mygamesonline.org/what_are_the_methods_and_techniques_of_teaching.pdf
    • http://tiwimifozukimu.medianewsonline.com/spinal_canal_anatomy.pdf
    • http://13millions-warzone.store/chick_fil_a_side_salad_no_dressing_nutrition05qu7.pdf
    • https://cdn.sqhk.co/xutazazo/jhjbhjq/malaguena_trumpet_sheet_music.pdf
    • http://glawerry.online/badshah_song_shehar_ki_ladki_ringtone4d380.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8b2103c5-345b-48fd-98e3-f19c90c4efd0.filesusr.com/ugd/0e2875_01ee4c62a36c41adb2e5b9f416adaafa.pdf?index=true
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_53a13e7449e946838101dbb2e8a61539.pdf?index=true
    • https://89d9876f-4e47-4433-ab5b-8da47ae3ae5c.filesusr.com/ugd/37c326_6f55fcdd5d454525b390056a1fec643c.pdf?index=true
    • https://03ca3561-abfe-48ca-9b59-b1b2b77f8126.filesusr.com/ugd/1af49e_abd686f5c6ac4de1b309a7a9c186ba85.pdf?index=true
    • https://a7176590-a44a-43b4-8b25-1171fb6190ac.filesusr.com/ugd/e6ccb8_c5748f4b7cdc4b8e9d861af837f9e6d1.pdf?index=true
    • https://d102a0f2-001f-4998-bb0a-88ac30ac05b5.filesusr.com/ugd/771ea4_662335c563cd4c6a905700e2243a7163.pdf?index=true
    • https://334e481f-4595-4613-8514-cf1b68b0f675.filesusr.com/ugd/a5bb32_747be776d11e4ddc84268f7ac1589433.pdf?index=true
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_6d2a7288e2db4eaf8b0cbc2eb0e76fa6.pdf?index=true
    • http://fedonefekipide.myartsonline.com/tell_about_yourself_in_interview_for_experienced_example.pdf
    • https://68fdcf0a-b1f0-4758-9edf-48d2be6d990b.filesusr.com/ugd/ac51ce_cfce46d597574641a2c643b0bcb14078.pdf?index=true
    • https://9d76d0c6-5807-43ac-a2ba-7b4112d1a20a.filesusr.com/ugd/5cd33b_ab7f0c8121a34bf88fbc0b4c2d7698c9.pdf?index=true
    • https://e60c805d-b9e1-47fc-b045-983511e9ac1f.filesusr.com/ugd/116bb2_a3028882d7fe4027af8510d0481b23f1.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc19.bin
3b1a184ee567455db75ab5cba1ed19b7939ea7585cf2bccdb9a1fd2044346f0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC19 5156 bytes
font_01_sfnt_off0000ed8e.bin
ebdec91c90e72dcf804040ead6b1e9f1d6abf948e73cf185b0dab44c7d692e1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED8E 10452 bytes

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