Malicious PDF — malware analysis report

Static analysis result for SHA-256 996da35d91af38f0…

MALICIOUS

PDF

253.6 KB Created: 2021-03-26 07:10:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c4996b9de519ea35eb89f30de46932f SHA-1: 331096f977f22f582bbebf09d9a726ebf4151393 SHA-256: 996da35d91af38f0fa192343f285ef17a8c20ab4b39bea3e68043691a369122e
144 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. Heuristics indicate it uses an urgency lure and an advance-fee scam pretext, common in phishing campaigns. The embedded URL points to a suspicious domain, likely serving as a lure or part of a download chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9888

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/123?utm_term=elvira+madigan+easy+piano+sheet+music
    • https://cdn.sqhk.co/najuvotuwoz/eYgccgg/fijolovitedep.pdf
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/253d5bfcf1ab527.pdf
    • https://polivepuba.weebly.com/uploads/1/3/4/5/134582029/1129059.pdf
    • https://static.s123-cdn-static.com/uploads/4499636/normal_600475962ed20.pdf
    • https://cdn.sqhk.co/jaziwuke/hbgd7Qx/57366807734.pdf
    • https://static.s123-cdn-static.com/uploads/4407057/normal_600837a44f058.pdf
    • http://viniveba.mywebcommunity.org/hp_elitebook_8570p_not_charging.pdf
    • https://xupufofi.weebly.com/uploads/1/3/4/7/134766196/kebefa_rubolerope_pelewafo.pdf
    • https://cdn.sqhk.co/dudugetogi/iXhitgd/hidden_veg_meatball_sauce.pdf
    • http://pusewuvi.medianewsonline.com/believe_in_yourself_full_book_free_download.pdf
    • http://zanodopowe.sportsontheweb.net/34854352224.pdf
    • https://pagafamowadaf.weebly.com/uploads/1/3/4/8/134878907/gemor_nofenoxavulijo_ziwize_tasotabip.pdf
    • https://cdn.sqhk.co/xubenijevewe/YvjbOje/vavofi.pdf
    • https://dudunetexuzo.weebly.com/uploads/1/3/1/3/131379759/dunazoku-xijexopemizitat-pexagumulij.pdf
    • https://static.s123-cdn-static.com/uploads/4483083/normal_5fce0ac864c77.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_efc16cb7ab254eeb9d237e46cfe80a8e.pdf?index=true
    • http://momalovategur.rf.gd/41284085726.pdf
    • http://nojudadosuzaxi.rf.gd/oxford_latin_course_book_3.pdf
    • https://764dfaed-7091-4b1c-a8ff-ceb5b694923f.filesusr.com/ugd/4bafdb_7fd160aef12b4c8da0017a91ce74df47.pdf?index=true
    • https://041bbef9-4dd1-43b9-9ec7-2672afc16ec1.filesusr.com/ugd/686814_3841cbf221724056aabf52ff0a5e8443.pdf?index=true
    • http://zelovavatag.rf.gd/where_do_i_enter_my_adobe_serial_number.pdf
    • http://lazevemu.epizy.com/bosch_washing_machine_service_manual.pdf
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_0da7c56e1e5f4de084f4f6653cf535a7.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_off0003ad16.bin
2a3b33e024edfa19ef2978d27cb6e2d0ffbcd5705e9b426922daad5ca1f6b14e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3AD16 5608 bytes
font_01_sfnt_off0003c00b.bin
c48054d40b96ee13c713564dc97cb08b2bfa051acd8ce922ed29b29858f1b48f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C00B 12244 bytes

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