Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9bbe4ff9a6b4841…

MALICIOUS

PDF

77.6 KB Created: 2021-03-16 10:02:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ccb8bc9a2299befdee7d4ef9d8669b3 SHA-1: d15c0abb84ed649407cee9dcc977d882674c118d SHA-256: e9bbe4ff9a6b4841404b5c00c9f02e6a272be4f890415bc99b684af57d415833
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'ponafet.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure for "Aldo footwear size guide", suggesting a phishing attempt to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the nature of the detection indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://ponafet.ru/wix?keyword=aldo+footwear+size+guide
    • http://kidufamipowanot.mywebcommunity.org/jogefu.pdf
    • http://bidizujimon.getenjoyment.net/competent_leadership_toastmasters.pdf
    • http://zefujixa.mywebcommunity.org/80993192077.pdf
    • http://veselutut.mywebcommunity.org/fetal_alcohol_spectrum_disorder_fasd.pdf
    • http://lebuvowune.getenjoyment.net/whats_the_fastest_way_to_learn_korean.pdf
    • http://pufivuziviv.mypressonline.com/business_analytics_internship_spring_2021.pdf
    • http://gekifek.scienceontheweb.net/koxezilijabobakerewotono.pdf
    • http://pixunune.sportsontheweb.net/semilla_de_aguacate_beneficios.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/bipovoromoj/nanebumel.pdf
    • http://jukasuxoseki.atwebpages.com/63039101427.pdf
    • http://kedisijusa.onlinewebshop.net/wafelitoleserakunox.pdf
    • https://s3.amazonaws.com/wapabefizosumi/bangla_cinema_protibad.pdf
    • https://s3.amazonaws.com/pegek/vibodimu.pdf
    • https://s3.amazonaws.com/bodajaku/vawowidi.pdf
    • https://s3.amazonaws.com/wizidimawag/how_do_i_jumpstart_my_weight_loss.pdf
    • https://s3.amazonaws.com/sazixipame/vekasix.pdf
    • https://s3.amazonaws.com/babetafaperaxov/bugevewezotazida.pdf
    • https://s3.amazonaws.com/savukojubusum/video_player_apk_all_format.pdf
    • https://s3.amazonaws.com/mefadedosuw/present_continuous_tense_examples.pdf
    • https://s3.amazonaws.com/xeropizuwe/lasobodukurebiduwab.pdf
    • https://s3.amazonaws.com/kigavanus/90237951196.pdf
    • https://s3.amazonaws.com/kodipopujufipig/industrialcraft_2_nuclear_reactor_guide.pdf
    • https://s3.amazonaws.com/bubisifapagefe/dasolugu.pdf
    • https://s3.amazonaws.com/sigobija/37681952081.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2c4.bin
58172e8ac5ff4432c2d3ee151b3e7c22c272638f82ac6276ff83d926ee04afae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C4 4980 bytes
font_01_sfnt_off0000f3e0.bin
bc36b5b581c9f4a7dec74a8f5cf84f074aacc8d2c7e6eb08a46af01313368b1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E0 11320 bytes
font_02_sfnt_off00011971.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11971 4324 bytes

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