Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5dc573c2dad09f3…

MALICIOUS

PDF

88.5 KB Created: 2021-03-08 14:20:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: d8de61d65ef7ef210627c9c48ffd23d0 SHA-1: 66e1764f6eac5a785bbada6393c3eb6eb35fc0db SHA-256: b5dc573c2dad09f3ed86a2f81e6b913532618a58c5e4b00235af5e1f52ffb2c7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a search result page, likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI and the document's structure suggest a phishing attack.

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://maypoin.ru/wix?keyword=facebook+birthday+notifications+not+showing+2020 PDF link annotation
    • https://cdn.sqhk.co/kugefiruxat/CKfzihd/transformers_forged_to_fight_bots.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/idhhtja/little_mix_bounce_back_live_the_voice_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/rijunawep/jifjcqI/zenalepegedodudiku.pdfIn PDF document text
    • https://cdn.sqhk.co/babakobesuxe/RDvSMY2/looping_video_in_youtube_app.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/c4jcjhN/creative_resume_templates_for_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/wifinalimow/BQheAgf/prodigies_music_lessons.pdfIn PDF document text
    • https://cdn.sqhk.co/pufuxogife/ghjjhli/57650172331.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/T5F82jc/defender_car_old_model.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lerezazo/gopofu.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/amino_acid_chemistry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c27b4f7-5eef-48e7-8de1-4463aef048a7/what_are_personality_assessment_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8443779-58d2-4b29-8143-de1ae9a29362/novena_del_sagrado_corazon_de_jesus_del_padre_pio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ddfe772-54bb-4a92-a3fa-ad54d808b1a6/endgame_samuel_beckett_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e820bc-5a3c-4c8f-9887-8ffdee2fe35b/61116394756.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/46468053713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9a7fbf0-fed0-4405-bd13-9a630857d232/martyrs_mirror_online.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/49156645594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95a1bf31-4a82-4ca2-893c-d9303b596509/tugopezitukarakilopabopi.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/define_application_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3719aa01-1fe2-4e90-b7a2-a571abd95665/63711709534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a43f471-b5ec-4317-a1f8-148913ffa53b/skyrim_xbox_one_mod_load_order_2019.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_off000111c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C5 5880 bytes
SHA-256: 5b1792ca0971cc7c10a093c2a01442ff1ac1106cd3b65b619f61dac0799d5b18
font_01_sfnt_off000125e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E2 15044 bytes
SHA-256: d754e2e90fd358cd90f16628c048056ba04de62b778de55a91041b1503cfcc59

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