Malicious PDF — malware analysis report

Static analysis result for SHA-256 92dd9819cd875b90…

MALICIOUS

PDF

84.3 KB Created: 2021-03-18 15:26:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 46c88ce45d938e16a6c61f956d162e09 SHA-1: 5943ba1ebbe9d7dc34c871ebf023cdaa43ddcff7 SHA-256: 92dd9819cd875b901e7e9cd278037bf40d3dd0e585e4ecfcae42c899a915d724
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://mezovuduw.ru/award?keyword=brief+answers+to+the+big+questions+pdf+free+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373248/normal_601717c72f4c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_60226f21c4806.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_600f77dc9d653.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467564/normal_5ffbb0723c667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419437/normal_6013b61d78954.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/why_my_epson_l120_not_printing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458125/normal_5fd80da73cb53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401716/normal_604d1c6d0d294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370052/normal_604fb9bd2a7c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475730/normal_6015fdbc327ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426425/normal_603d357e2586b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_600da51287703.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390057/normal_603e3e03e5c31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zasuwunal.myartsonline.com/87599938668.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/bovine_spongiform_encephalopathy_test.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/anno_1404_gold_edition_spolszczenie.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/59628566458.pdfIn PDF document text
    • http://nupuzawov.onlinewebshop.net/medical_dictionary_french_english.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/baidu_wifi_hotspot_free_for_pc.pdfIn PDF document text
    • http://bejanifezilo.atwebpages.com/au_bal_masqu_paroles.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/38881028074.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_off000107f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F7 5712 bytes
SHA-256: eaae9b5b51aac8c3d714b9e81edcf23ef2de448e822033d50f31ab0b69d19775
font_01_sfnt_off00011b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B66 12472 bytes
SHA-256: 330039c8d4dee93449d9b96a4b72b93a80987633d01545e4c7adcf9a8fadcc19

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