Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e4aeea97fd3b017…

MALICIOUS

PDF

135.6 KB Created: 2021-03-16 07:25:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 199d7d085defd8f223d56d633880541e SHA-1: 900b834c7c28ba6a309eb99105c0edaa05e27940 SHA-256: 5e4aeea97fd3b0172f355e8a84c04d9b0d0c4621d071bfa9e8005788db1753fa
156 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a phishing lure, specifically an advance-fee scam, and also contains a callback lure. The embedded URL points to a domain that is flagged as suspicious and is likely intended to lead the user to a malicious site. The ML classifier strongly flagged this PDF as malicious, and ClamAV also detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://druttle.ru/wix?keyword=ace+hardware+return+policy+on+grills
    • https://bapixive.weebly.com/uploads/1/3/4/3/134393773/zokapufudezexawuz.pdf
    • http://gosoxegekiri.mywebcommunity.org/how_to_export_midi_tracks_from_garageband.pdf
    • https://cdn.sqhk.co/putizimetiwe/bRiheHw/secret_of_mana_remake_pc_trainer.pdf
    • https://cdn.sqhk.co/mopomotop/ZuHidIm/zeloladus.pdf
    • https://vokesilito.weebly.com/uploads/1/3/4/4/134400786/ritidoboraduboxogaji.pdf
    • https://cdn.sqhk.co/jodanonot/lvcmyev/diremasamavejugiv.pdf
    • http://paxezot.getenjoyment.net/kanifometogovunife.pdf
    • https://cdn.sqhk.co/zetoreli/DigLCgC/kurosipulemevor.pdf
    • https://wedufejaf.weebly.com/uploads/1/3/4/0/134018106/56e23481c29517.pdf
    • http://posadukik.getenjoyment.net/andhra_pradesh_government_holidays_2020.pdf
    • https://cdn.sqhk.co/wekababu/gdKfkEZ/free_stuff_by_mail_2019_free_shipping.pdf
    • https://xovajuvomupug.weebly.com/uploads/1/3/0/7/130776021/jakitisoburej_sakudibotujeli.pdf
    • http://debodopox.iblogger.org/10999819980.pdf
    • https://gopebuxagofu.weebly.com/uploads/1/3/2/6/132681698/8243e408.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vilijakuji.epizy.com/d-link_dir-615_use_as_access_point.pdf
    • http://dexizijisub.atwebpages.com/kojukawetes.pdf
    • http://semerobaragizeg.epizy.com/ihs_energy_storage_report.pdf
    • http://zokusopejexumub.rf.gd/barrows_guide_theoatrix.pdf
    • https://c941d99d-b58b-4215-81ce-525e38db2b81.filesusr.com/ugd/2dc4cf_f50e268c1099401c805b2698e38b234d.pdf?index=true
    • https://c84d532c-3b33-47d6-96aa-4134a1164eb1.filesusr.com/ugd/6d45f6_87df61546f684c1dae1db399a858a229.pdf?index=true
    • http://musilopira.rf.gd/microsoft_biztalk_esb_toolkit_2._1_download.pdf
    • 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_off0001d471.bin
5c229d259d6747f06f256524e12997f5fc23a6f1c1c28aeb13b7c78c3df7f06b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D471 5516 bytes
font_01_sfnt_off0001e745.bin
46fe2c5fcd16359bc33460cac1a3eac12e42f4dd1f3f17c60f7856945a3f9c53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E745 12244 bytes

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