Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc074f5d046b4f4e…

MALICIOUS

PDF

77.5 KB Created: 2020-12-18 01:49:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c388fe310e703bc0b5c46f20dce6ed3b SHA-1: 5b842767b3f3f7013f275bdb6b8375cc823bbdd9 SHA-256: dc074f5d046b4f4e14d951ca4e16468939c945ffdda73dc0ee9ce69b0272f372
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 0.9925

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://traffnew.ru/aws?utm_term=chungha+gotta+go++lagu PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4419410/normal_5fc74b014cc44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411511/normal_5fa238f9cf3d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448980/normal_5fb28e47ccadb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421641/normal_5fa7eda77fe59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401545/normal_5fad78e426581.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/kefefetafij/44188558434.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc68823f9866f3fd2faa337/t/5fc6e30d7995075abdd390a8/1606869774173/cat_running_around_frantically.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66779772-a573-4ef0-ad7b-6973ffd9b936/rdr2_platinum_trophy_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1520988c99b6d37aa082c/t/5fc59165f81c9a2a0c6280a3/1606783334224/93809637324.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC531 7172 bytes
SHA-256: bec957c4249bb712a8feb16f52e10af802f11f1a8cfb1217d190af9bdbb1a244
font_01_sfnt_off0000dd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD12 4576 bytes
SHA-256: 50341e1acdd0aef6dc08a2797e81363554f767d3c9e093a1ea41cc9eb05196c9
font_02_sfnt_off0000eca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA0 11016 bytes
SHA-256: 0d0a19a42c5cba6dcce2407e76cb350205b8b3d7a0d615a6b3e95263156200aa
font_03_sfnt_off00011287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11287 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e

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