Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff4b8d3885fdd4b7…

MALICIOUS

PDF

78.1 KB Created: 2021-03-23 12:29:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0904e24760932cdfda9ba565c19a4caa SHA-1: 8d6800833dfe9f6c1c87a27f92c17b8df388c4db SHA-256: ff4b8d3885fdd4b7abf9f742e5de4d6290b53b272de1c4a07adbc9e3285fa1fb
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/award?keyword=build+my+life+bethel+chords+pdf PDF link annotation
    • http://mscgis.net/where_to_buy_snapper_lawn_mower_partsmudxw.pdfIn PDF document text
    • http://7evenrp.ru/sebeduribimetadogidotavi3d1w6.pdfIn PDF document text
    • http://idealicaitaly.site/19133414651m13du.pdfIn PDF document text
    • http://biwedujurar.mywebcommunity.org/14164483283.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/govib.pdfIn PDF document text
    • http://uscreditmonitoring.info/20786901570o5i02.pdfIn PDF document text
    • http://xxlmature.site/how_do_i_connect_my_soundpeatss173v.pdfIn PDF document text
    • http://wisecredit.info/gifavesib0fjhp.pdfIn PDF document text
    • http://world-wildshop.com/tintern_abbey_wordsworth3zhrb.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/13331830457j1jto.pdfIn PDF document text
    • http://nashremont.site/how_do_you_type_letters_on_a_phone_keypad7vex1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zalatikewal.atwebpages.com/goxilavijopoxabevonegev.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/free_aviary_photo_editor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ed784b-f288-43cc-b50c-ea84c2980ac3/87732408311.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/how_do_they_take_an_ecg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92044a32-ae79-4562-835f-d801f9912f1e/2018_toyota_camry_xse_lease_deals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64288c55-0cf6-4b37-9bde-5efdd7a6bc55/kogukijutemopugowexitesut.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/fobividixe.pdfIn PDF document text
    • http://vupaguriwedizid.atwebpages.com/53129527449.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/rati_duporole_assamese_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/bsc_3rd_year_chemistry_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE615 5252 bytes
SHA-256: 83082f294bca67c0099a0b87f9a47fa600e9882ebc1b4da6e2288088d5d1103f
font_01_sfnt_off0000f7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F8 10784 bytes
SHA-256: 5ed93116b80852804efd93cb9454cd0d371f3bb077d8c09a947eb7b524fd3436
font_02_sfnt_off00011d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D06 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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