Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5c2d18c080ef9f…

MALICIOUS

PDF

74.2 KB Created: 2021-02-02 22:38:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5653fceb538dd89ef87d2a6a7aa2990b SHA-1: 46f3fbad762a9564f1f1a1c6af50a136dd16bf64 SHA-256: ff5c2d18c080ef9f1929e6226aac6a54c43c18867b01690b920dae283c1d014d
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 0.9998

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://druttle.ru/aws?utm_term=operational+risk+management+books+pdf PDF link annotation
    • https://cdn.sqhk.co/jadepibake/cuaRcje/jezuzeninijipuzovo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402718/normal_5fc9615b87ffb.pdfIn PDF document text
    • https://cdn.sqhk.co/sebidurubuze/gjbheQX/free_music_download_app_for_windows_8_laptop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388283/normal_5fd7d0c33b3a3.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/ggo6jh0/houseparty_login_with_facebook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371247/normal_5fc684ad721be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415326/normal_5fefeee0282bb.pdfIn PDF document text
    • https://cdn.sqhk.co/kososojog/hggcqgd/kapoma.pdfIn PDF document text
    • https://cdn.sqhk.co/pinebiven/gjzif4e/dinosaur_simulator_dino_world_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/berirenike/g6mgfgh/pewulegula.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/jigcVij/missile_command_recharged_pc.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://nanesipub.rf.gd/fidelity_blue_chip_growth_fund_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/begux.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/html_css_templates_free_for_hotel.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/free_reader_cnet.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_off0000d852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD852 5380 bytes
SHA-256: 27efbfc9df7312bece4acbeb0658beaa7ee99b3988eced42a62d5f1b73c306e3
font_01_sfnt_off0000ea76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA76 10404 bytes
SHA-256: 52263b5b5a768080e69dc83ca15ec6dffe90224804a99f229a132176fe095ab3
font_02_sfnt_off00010dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBD 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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