Malicious PDF — malware analysis report

Static analysis result for SHA-256 73e99eeb02367933…

MALICIOUS

PDF

196.8 KB Created: 2021-06-10 03:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b2dd93afbe310e17caec285f25b69994 SHA-1: 46826a11652f832be0e8e2854b89ccb506cb43b8 SHA-256: 73e99eeb023679337b528ebe95fe056beb06ea2da55f233ce6bd383a6caf8567
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 0.9992

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://drafthe.ru/pbw?utm_term=storage+mod+terraria PDF link annotation
    • https://niwejipudid.weebly.com/uploads/1/3/5/3/135383293/318dbac.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4470836/normal_60b751bf19e8c.pdfIn PDF document text
    • https://jitoxegewizo.weebly.com/uploads/1/3/4/4/134460998/giwurufobedu-xojupa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_600e695a0c68e.pdfIn PDF document text
    • https://tulaliferejuza.weebly.com/uploads/1/3/0/7/130775137/8630eb1a58a253.pdfIn PDF document text
    • https://lezivefa.weebly.com/uploads/1/3/4/4/134458465/8539778.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373779/normal_5feb68ed311ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483587/normal_60256c47be35c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450428/normal_606ce118afe2c.pdfIn PDF document text
    • https://buromikeraxisam.weebly.com/uploads/1/3/5/3/135323607/lodowanodexijiximif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5fdccd64012e7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wipadewor.pbworks.com/w/file/fetch/144670389/28649579056.pdfIn PDF document text
    • http://vawaguzidatu.pbworks.com/w/file/fetch/144424212/82006588735.pdfIn PDF document text
    • http://ronojew.pbworks.com/w/file/fetch/145004223/93971089482.pdfIn PDF document text
    • http://podimil.pbworks.com/w/file/fetch/144986049/vovavar.pdfIn PDF document text
    • http://supatibu.pbworks.com/f/justinas_marcinkeviius_mindaugas.pdfIn PDF document text
    • http://pazimonofe.pbworks.com/w/file/fetch/144999948/nubaxawibitesite.pdfIn PDF document text
    • http://kakexigodelo.pbworks.com/f/texivut.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002a3bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A3BF 9352 bytes
SHA-256: 3a20421e562b5f2e523cf9636ef1193ae3694f0ab3a804e5305deaf43d476610
font_01_sfnt_off0002bc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC29 4016 bytes
SHA-256: e64f602d94d4b276bf440e2e8ec3f900861eaa46f6322aed56d2529dd1d02a48
font_02_sfnt_off0002ca7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA7A 5036 bytes
SHA-256: f1da81260144437df613b770e78c2a14a4efe1d7299ebf4a76c6348f49585ba3
font_03_sfnt_off0002db7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB7E 12584 bytes
SHA-256: afc61b010331eb4d6059b04ba2a0cfa7e8833ba15d04b37bedb7a82ae916541c

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