Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6a360c0ead2c5a…

MALICIOUS

PDF

75.7 KB Created: 2021-03-03 01:39:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 37f9200aa596ba2620588fe8b3e191ab SHA-1: 9e587f1e3df88ff13e9a875238bc335f77e6b8cd SHA-256: 7e6a360c0ead2c5a1e6417a3830bd3acb4c3d322d648421a48acd860e2f5f7d8
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. It uses an urgency-based lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=small+e+bubble+letter PDF link annotation
    • https://cdn.sqhk.co/lupekute/hhzxge9/44553473337.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386086/normal_601b30b7ad500.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444643/normal_5fca14ab7e16b.pdfIn PDF document text
    • http://rapoxarawiwalo.sportsontheweb.net/how_do_i_fix_blurry_epson_printer.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/AjeDfja/tunozevafatofegaxorolifak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377101/normal_602f131a99006.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408176/normal_5ffef17fc680b.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/1ggEjfI/todofu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_602d36ce809e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464052/normal_6010983dd92bd.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://xusapibu.onlinewebshop.net/bokanejizomulekojeguro.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/tojimazonufap.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/rupuzo.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_off0000e109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE109 4512 bytes
SHA-256: 59a1eda577e5c04fbe81bf99dd4782fe33768748482c3618468cc0c136e92a99
font_01_sfnt_off0000f053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF053 10440 bytes
SHA-256: 41b2cc1dc708d9eb39d09062b913241259c36f52de6c40717d71a108d9cbaddf
font_02_sfnt_off00011406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11406 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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