Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a4e099c2fc5d36b…

MALICIOUS

PDF

87.2 KB Created: 2021-04-05 23:07:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 218a637902d09a072d8ac8214517ec06 SHA-1: 54df9e9f44ab913a8e95ad21d1e3132d37bf9f4f SHA-256: 7a4e099c2fc5d36b35bfd05b3f90e874193688c8cc2735b7699e2c617afc0f19
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a malicious payload disguised as a keyboard application. No scripts were extracted, but the presence of the URI and the ClamAV detection strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=best+arabic+english+keyboard+apk PDF link annotation
    • https://cdn.sqhk.co/zajikeze/Lhekiim/barezofizumo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387586/normal_5feb38fa25da0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453334/normal_602687924e32d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470833/normal_605512a4c2c45.pdfIn PDF document text
    • https://cdn.sqhk.co/fetumamuv/9gcjhhf/rejizunisex.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/EiboCha/3on3_freestyle_basketball_mod_money.pdfIn PDF document text
    • http://jusibebobekig.iblogger.org/what_is_the_best_countertop_toaster_oven.pdfIn PDF document text
    • https://cdn.sqhk.co/gukitane/jjifhgd/20718717561.pdfIn PDF document text
    • http://defupezive.iblogger.org/semelujugomegumoxitibeko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502493/normal_604ac6b8c8dad.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/Jidbsig/download_game_siege_world_war_2_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gefureguk.epizy.com/nodovusudunuzasij.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/decameron_boccaccio_espaol.pdfIn PDF document text
    • http://tuzekejaxegis.epizy.com/luxuvinusotonumuximov.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/notification_library_android_github.pdfIn PDF document text
    • http://nofegogimulat.rf.gd/42623637415.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/john_deere_lawn_tractor_parts_schematic.pdfIn PDF document text
    • http://sikejafomanama.epizy.com/taurus_pt140_millennium_pro_sights.pdfIn PDF document text
    • http://musovinudebepak.epizy.com/difelilutuf.pdfIn PDF document text
    • http://wilogoxe.epizy.com/nibasi.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/expenditure_report_usmc.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/transitive_and_intransitive_verbs_quiz_class_7.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/manual_caldera_junkers_cerapur_zwbc_25-_2c.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/93759485852.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF390 5692 bytes
SHA-256: 4d0a812971122312e8bb4c25f88d32a8b8bd582a1dce316bd548f204136791c2
font_01_sfnt_off000106ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106EA 11828 bytes
SHA-256: 586521604ae079e234c22436ef33ab3ecf4f36ba1861fe9663b56d45f4ab5ddc
font_02_sfnt_off00012f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F0F 19552 bytes
SHA-256: 21ddb8cf1bffe5fd6f2e36bb07d2df753d4fd394130c7e22ea1dfd759e26f83e

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