Malicious PDF — malware analysis report

Static analysis result for SHA-256 75f7e03f15e4286a…

MALICIOUS

PDF

75.7 KB Created: 2021-03-22 18:25:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cb9032cc04f3fdd9e6c4f7f79367e22 SHA-1: 5a7f8a36191b46ce4e1c8bb3362242b0d54a9501 SHA-256: 75f7e03f15e4286a217c504a30d13bde33ac44c45d45121c9615f83b20c60a22
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a URL that appears to be a lure for downloading a malicious PDF. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to trick users into downloading further malicious content, likely a phishing document.

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://leonvi.ru/award?keyword=atlas+copco+air+compressor+manual+pdf
    • http://save50it.pro/xagupomimelavebomutae0ds5.pdf
    • http://flash-sar.online/sipedabuvulorusehbwub.pdf
    • https://cdn-cms.f-static.net/uploads/4376382/normal_60276ec3e2087.pdf
    • https://static.s123-cdn-static.com/uploads/4387715/normal_5fc6adab7fb15.pdf
    • http://solent.bar/how_to_program_the_chamberlain_clickerzldok.pdf
    • http://zelopaqq.xyz/zifufupufab2pw6f.pdf
    • http://merovew.xyz/que_significa_ser_autorretenedor_de_rentaitgze.pdf
    • http://byseles.xyz/18475499858dm2rm.pdf
    • http://fasad-dom.site/what_is_a_good_electrolyte_water79a3n.pdf
    • http://fuxagiwowasiwu.22web.org/midezibisodufasif.pdf
    • http://conicppjry.bid/agrobacterium_vitis8bfl9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4e09389e-cde0-42b7-b147-9a2b6185bb2c/77428660295.pdf
    • http://fowagimumaviguf.rf.gd/39415187125.pdf
    • http://depegiwisa.epizy.com/46745463034.pdf
    • http://fegumipidibig.rf.gd/engineering_guide_300_vanilla.pdf
    • http://deketinak.rf.gd/video_editor_for_iphone_free.pdf
    • http://dowibisewapidon.rf.gd/12739793694.pdf
    • https://uploads.strikinglycdn.com/files/4b7c306b-b0e3-4905-b32c-03b124688884/pixeja.pdf
    • http://nufolupi.epizy.com/38022758468.pdf
    • https://uploads.strikinglycdn.com/files/53a3a59d-0cfa-466e-a555-6fdebe08ee0d/brother_project_runway_limited_edition_sewing_machine_manual.pdf
    • http://misugivunuzu.epizy.com/ahista_ahista_song_bestwap.pdf
    • http://moniladipawi.epizy.com/azure_db_connection_string_format.pdf
    • https://uploads.strikinglycdn.com/files/4aa24e07-dc6e-4483-8a53-733585005d16/demurapewasin.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_off0000e984.bin
aea424935d8d954650e2d9c9cc1bc4f1a46d8f7133a57e0d19dcbee53c9006d7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE984 5288 bytes
font_01_sfnt_off0000fb6c.bin
45d2b69b8ab7275627c8027d3e259da2b99c03b017aeba5bc0660d9f8a6c5c07
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6C 11248 bytes