Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9932a81c15bc9c9…

MALICIOUS

PDF

97.0 KB Created: 2021-03-28 16:26:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7cc30aeb9a99a5fc339ffedf616ab7e7 SHA-1: b0e117736e7bf900e93b90694bc3f9c87ff21408 SHA-256: d9932a81c15bc9c99957d46f917e488e3af619fa7efd13debadc2ca54190329f
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a clipboard-command (paste-and-run) lure. 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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://golowaki.ru/award?keyword=john+f+kennedy+airport+map+pdf PDF link annotation
    • http://wogesifuri.iblogger.org/organic_chemistry_notes_class_11_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474231/normal_5fd9319f07227.pdfIn PDF document text
    • http://dmgameplan.com/gromacs_manualdq48e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420238/normal_6025022354482.pdfIn PDF document text
    • http://kevaduvapagenig.iblogger.org/kcet_previous_years_solved_papers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410415/normal_60023b2907829.pdfIn PDF document text
    • http://remeik.ru/airline_commander_hile_apk_1._1._4s1l2p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448556/normal_5fddf78e3e9c6.pdfIn PDF document text
    • http://christinaanddavid2019.com/99694611858o46u5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484818/normal_60021cdc50b9c.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/dudujopixejikug/leveling_tailoring_classic_guide.pdfIn PDF document text
    • http://romisov.epizy.com/dyson_dc41_replacement_parts.pdfIn PDF document text
    • http://vulamexi.rf.gd/dikibulijogiwosoko.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/angular_formgroup_html_example.pdfIn PDF document text
    • http://zilajib.epizy.com/annual_report_of_coca_cola_company_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/all_the_things_you_are_lead_sheet_free.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/exercice_atomistique_s1.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/stocks_to_buy_now_under_100.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/majesty_worship_his_majesty_song_free.pdfIn PDF document text
    • http://rasujej.rf.gd/petsafe_stay__play_wireless_fence_reviews.pdfIn PDF document text
    • http://julexobe.rf.gd/23049808114.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_off00013c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C61 5224 bytes
SHA-256: d8320b771eeec16cfd8cf03406fbc388a31f5dee1f1411cf041dccf08ae46e63
font_01_sfnt_off00014e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E0E 12176 bytes
SHA-256: 93e5207407c1fd5cca4a02722d542d6392e4133effb72f7182134b4160da15b2

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