Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd2157de6b33e0d…

MALICIOUS

PDF

83.3 KB Created: 2021-04-04 03:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b0f7c6340fe154c98b99f8e6d37de702 SHA-1: 25fb560fc9a97a5c3547712659e0f70835bf487f SHA-256: 5bd2157de6b33e0d45b64e1a81a1bdff5ea8ef544cfb183c632bf7dabf7e6d92
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://botokaw.ru/123?utm_term=carrom+pool++pc PDF link annotation
    • http://gidonuvawugirid.medianewsonline.com/roman_art_6th_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/laripikiwafo/gL2nLNp/fuwupurezotumoku.pdfIn PDF document text
    • http://lezirumari.sportsontheweb.net/zerodha_varsity_module_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380863/normal_60184cdf67822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484636/normal_604354e68e234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381544/normal_6022cd5f548ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470833/normal_5ff8463ebf4c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474739/normal_60094c4e84fc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391634/normal_605a29ed2349f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_5fdb3d32aaba6.pdfIn PDF document text
    • https://cdn.sqhk.co/rufetuzek/avohdid/wiziru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486984/normal_600ee6f65dd50.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/wupiwupiwot/formatting_sql_code_online.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/68306163427.pdfIn PDF document text
    • http://zuvuzevo.atwebpages.com/english_vowel_and_consonant_sounds.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/pifitiw.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/new_york_photography_gallery_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/image_eraser_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/65173834987.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF510 4804 bytes
SHA-256: d8adc0a8ccbaa901939804804bc9f2a0b138c318e3c66e7c5e569897b26cde44
font_01_sfnt_off0001054d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054D 10816 bytes
SHA-256: 4d3f3718479f0119883d7d8e49f163ffe5955e250a1fd3d2ce2b501eaa73fa7d
font_02_sfnt_off00012ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC5 16144 bytes
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174

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