Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ed2e6ff41b664b…

MALICIOUS

PDF

79.3 KB Created: 2021-04-23 20:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51c2bfcf1cc328a12eb1eb97e5b7a863 SHA-1: d1aeaa345901ee86276732cfccc7afb2b265ecb9 SHA-256: d4ed2e6ff41b664ba9c80248ffc6b3930f769622bc0007043d9eb9b9f6325a6b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by both heuristics and ClamAV as malicious. The ML classifier also flagged this PDF with high confidence. The embedded URL likely leads to a phishing or malware distribution site, aligning with the 'Spearphishing Attachment' technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://pelibifir.ru/strik?utm_term=dcs+world+mission+editor+tanker
    • http://xizapataruxeku.mygamesonline.org/memodifo.pdf
    • https://xupumoga.weebly.com/uploads/1/3/1/1/131164417/b767639.pdf
    • https://noxurujoba.weebly.com/uploads/1/3/4/3/134384046/sotizux.pdf
    • https://sovopedu.weebly.com/uploads/1/3/5/3/135301682/2885187.pdf
    • http://fomijegi.mypressonline.com/criminal_case_files.pdf
    • https://static.s123-cdn-static.com/uploads/4471235/normal_5fed15dd227e5.pdf
    • https://cdn-cms.f-static.net/uploads/4405419/normal_603135484030d.pdf
    • https://cdn-cms.f-static.net/uploads/4416494/normal_600bfd0a276df.pdf
    • http://woziwowariv.sportsontheweb.net/ssc_stenographer_mock_test_download.pdf
    • https://kunexiravirub.weebly.com/uploads/1/3/5/3/135344507/c9360f33a28cc.pdf
    • http://widaluvawigomum.scienceontheweb.net/87067638142.pdf
    • https://cdn-cms.f-static.net/uploads/4467915/normal_605f79370267c.pdf
    • https://pixumoxijabana.weebly.com/uploads/1/3/4/7/134748481/f8a76ff95683.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/86a41032-cd8b-4743-987c-2cf1b212e7ef/89177145016.pdf
    • https://uploads.strikinglycdn.com/files/6f4ccf05-54d9-4591-a2be-4bc4930e790e/george_foreman_grill_hamburger_cook_temperature.pdf
    • https://s3.amazonaws.com/mesixadelomomo/ft_857d_price.pdf
    • http://neketepa.myartsonline.com/26366702747.pdf
    • https://uploads.strikinglycdn.com/files/84ff3a8c-d240-4a74-9847-ca9f4e501d6b/68731144235.pdf
    • http://sovogezo.atwebpages.com/how_often_should_i_change_my_honeywell_air_filter.pdf
    • https://uploads.strikinglycdn.com/files/cbf189c5-928a-40cc-89d4-d8b97ae23ca1/how_to_clean_crane_ultrasonic_cool_mist_humidifier.pdf
    • http://zijurape.atwebpages.com/central_bank_exam_past_papers_sri_lanka.pdf
    • http://futikuzita.onlinewebshop.net/92792203672.pdf
    • https://s3.amazonaws.com/zaxefemebidaz/are_there_any_haircut_places_open_near_me.pdf
    • http://motuvogipe.onlinewebshop.net/79593511803.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_off0000ecb5.bin
6d7e88473fc2a7c4677dc2be085bd870afcf6624a0dd2bba1daf8b4f9b58f742		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECB5 5028 bytes
font_01_sfnt_off0000fdbd.bin
0e287a659f2fefed7c571f8c11e8aaad2cd22f2c52dc3c08b1108b7b9072aa7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBD 10428 bytes
font_02_sfnt_off00012163.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12163 4324 bytes

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