Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c0e0b093c61ddd…

MALICIOUS

PDF

89.0 KB Created: 2021-05-08 05:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 89a856b5799a1a7e166e764415ee7e63 SHA-1: e2c561cb0f7bf1a1d846df19b71c117ae85224b3 SHA-256: 55c0e0b093c61ddddf75147bb06478cc4099cdee0892c4484c1ce6c663d84dcc
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/strik?utm_term=how+do+i+reset+a+pioneer+radio PDF link annotation
    • http://risejesifisem.22web.org/convert_to_word_document_adobe.pdfIn PDF document text
    • http://bokegaf.22web.org/kiriwebo.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/jijjhdD/94462511419.pdfIn PDF document text
    • https://cdn.sqhk.co/vekokoze/ighCTmg/82748898928.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/Dapz2je/bible_word_search_generator.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/gcBXihh/gamefly_coupon_august_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4d9ca0d-2b8c-49fa-b70d-9ad0f6721f8b/mejisaxulotuvajejik.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/82722395681.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/xuxoponebup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df1ab33b-db19-4469-abe7-d38fd4e87903/how_to_use_900_amp_jump_starter_750.pdfIn PDF document text
    • http://josuguremim.epizy.com/citra_3ds_emulator_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47d61f82-1693-4834-b9ea-7bff6524af98/how_do_you_fix_the_auger_on_a_pellet_stove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/801e6fbc-0193-458f-ae41-d490359ac967/59897138436.pdfIn PDF document text
    • http://xudazefujigi.rf.gd/bujosutelewediwaporisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc95672-ddca-48da-b6e2-a9b5ac518df2/wordpress_user_login_history_without_plugin.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/15321789856.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/backuptrans_android_whatsapp_transfer_to_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4612b23-d8a2-4511-8a2d-bbb4ccb7a0c4/does_charlie_die_in_flowers_for_algernon.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF9 4976 bytes
SHA-256: 503c461b7b7da9dc58f9e577dd469862aa87942c0806978e8d017a605d862a8c
font_01_sfnt_off00012cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFE 12464 bytes
SHA-256: 95ad37744fdcc583fb49079e4e9e628c1a721a3b5fd5a47d21ebbd3bf6776c6b

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