Malicious PDF — malware analysis report

Static analysis result for SHA-256 fccc652df6f5c191…

MALICIOUS

PDF

76.3 KB Created: 2021-04-08 22:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb87abc9a077afe61b7bc0fa6647505b SHA-1: 77e013bb0a55dc343a23b6e5895f0d3a205251e6 SHA-256: fccc652df6f5c191cf8babea4f1283e6e896b13ec41e0a5224a3911bb34b7a95
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URL that directs users to a suspicious domain, likely to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains text related to a concert, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/strik?utm_term=old+school+rap+concert+in+new+york
    • https://xaviloxoganobe.weebly.com/uploads/1/3/1/3/131383750/8704738.pdf
    • https://zatemolepilud.weebly.com/uploads/1/3/6/0/136085897/tirujidufoz.pdf
    • https://wamonudikiso.weebly.com/uploads/1/3/0/7/130776885/kawepafunikenu.pdf
    • http://pokovata.scienceontheweb.net/dewutuwimerufuz.pdf
    • https://xifabaruwene.weebly.com/uploads/1/3/0/9/130969291/vegelilavixeraxovi.pdf
    • https://cdn.sqhk.co/delopomixaba/PjiKrQ5/babonajuzoxebalodoboze.pdf
    • http://getepitisux.mywebcommunity.org/rii_keyboard_keys_not_working.pdf
    • http://megidexabaror.mywebcommunity.org/in_vivo_antidiabetic_activity_of_plant_extract.pdf
    • http://zamowafa.mywebcommunity.org/candlestick_forex.pdf
    • https://nanijufofif.weebly.com/uploads/1/3/3/9/133999758/bodat.pdf
    • https://cdn.sqhk.co/muvotugi/v2hgJMx/35393716432.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c47ffa2d-38fb-45bb-9ffb-5e5fe5b2bb41/31011459010.pdf
    • https://s3.amazonaws.com/rovikibixu/esl_gerund_or_infinitive_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/6cfa4fff-a59e-4188-906c-9956ea89d4f9/socratic_questioning_cbt_book.pdf
    • http://rudufegasavu.rf.gd/morpheus_tv_apk_free_for_android.pdf
    • https://s3.amazonaws.com/suzixegazunow/android_auto_apk_new_ui.pdf
    • https://s3.amazonaws.com/jikopot/hello_bixby_apk.pdf
    • http://mafefelanepule.epizy.com/79912080158.pdf
    • http://nuvotadaxiti.epizy.com/11236450499.pdf
    • https://uploads.strikinglycdn.com/files/2e6c24d9-5489-4ca3-a967-f9dd40481432/smokey_mountain_smoker_manual.pdf
    • https://s3.amazonaws.com/vonusirukete/nejikalejikiperagaso.pdf
    • https://uploads.strikinglycdn.com/files/2ef6eebe-0621-4409-b2e9-38f78cb7539d/how_to_use_a_scale_ruler_in_mm.pdf
    • http://movuveso.rf.gd/lamefubizasiwuxibuwi.pdf
    • https://uploads.strikinglycdn.com/files/ed6a335b-0e74-43f7-a1c8-272cc92ce2cc/61074417427.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_off0000ecc5.bin
b5ae2f1a4662a3c761c5778cde1c19178e5fe854df9540985d0e88f12516bea8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC5 5444 bytes
font_01_sfnt_off0000ff56.bin
5b3ac5fe3e54997a9da250187688bc9fbf4dddca603945b38a969e4dbc94eb76		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF56 10592 bytes

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