Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a9281e8e6a9234…

MALICIOUS

PDF

81.0 KB Created: 2021-03-27 23:01:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 56c04278a9000aafaeaee5b1379aacb9 SHA-1: 58d2a7c56c2b8bb19db2946337ea98243cceec7c SHA-256: 74a9281e8e6a9234742dde219fdbbc6b4e19090b6f533cf56d850dec1787b41c
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/aws?utm_term=christmas+bible+quiz+true+or+false PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374986/normal_5fd7a9eceb31e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5fd12dd00fb2a.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/hYihh7v/67855045727.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5fcd5e556ab38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491410/normal_5ff904d959113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465127/normal_60172ae8c3181.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451565/normal_600985e60e749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423453/normal_60219d4e427bd.pdfIn PDF document text
    • https://cdn.sqhk.co/vozofugova/gehehgg/norepizorugumedava.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467612/normal_600e842b6573a.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwopazeg/hchcnWL/azhage_azhage_tamil_album_video_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470223/normal_5fc89994aaa7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_60251325ed960.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/dedinavesute/balance_sheet_definition_and_example.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/how_to_find_out_car_seat_expiration_date.pdfIn PDF document text
    • http://lozepis.epizy.com/baaghi_2_theme_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/agriculture_information_contact_centre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e27d8f3-bb65-4fe0-bcbb-172ae22e153a/amplificador_de_audio_casero_100w.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50ba9387-5f19-497a-b0aa-1a1728af51df/92113658204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4d9cea8-b00a-408c-b089-aeada52eef14/john_g_lake_quotes_on_prayer.pdfIn PDF document text
    • http://kadinox.epizy.com/mortal_engines_2018_trailer.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_off0000ff49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF49 5228 bytes
SHA-256: 8ae6541088ecfe1211864243f4177c5e19869d440ae9a0ee64b6044b3b182ff6
font_01_sfnt_off000110e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110E6 10984 bytes
SHA-256: 9612cc621055eb463cf91e3c35ed06dbb9693081d0ce22150a730ac3b943aaf5

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