Malicious PDF — malware analysis report

Static analysis result for SHA-256 df397606acafbb01…

MALICIOUS

PDF

69.0 KB Created: 2020-12-08 16:27:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7688514591bd9256a8f0191e5f8232b0 SHA-1: d8100cd4e0f0d2551111f6e16409a5531513ea95 SHA-256: df397606acafbb0160c89993b60be83c51789a1b5ba41b58e4600c3d2fb00150
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://trafftec.ru/strik?utm_term=lithium+electron+configuration+excited+state PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367905/normal_5fbeee2d33f27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473384/normal_5fa422809697a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427086/normal_5fa9fecdc38fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428331/normal_5fc2c8c52161d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527357/normal_5fb785f433c3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_5fbeeb24385cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415525/normal_5fa569da0a1d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5f9578671e3bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369917/normal_5f8d515c91e72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482863/normal_5fc78b43abe14.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5677ef9866f3fd2f21712/t/5fcbc03a393ce473563b5d28/1607188539389/biminomadokun.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed1560f2895dc1e7fe11/t/5fc2ef5af81c9a2a0c0366da/1606610779286/pemagogowudovepizu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17ddbf9866f3fd2d885d9/t/5fc496843570fb44d195412f/1606719109166/51799608777.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5389b8139af0376616de8/t/5fcc49a15177ea328cb6873f/1607223714360/bulletproof_coffee_gain_weight.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc15629df132613bbc0c61d/t/5fc6f47ac953717e09cb9469/1606874235007/dj_music_mixer_free_download_full_version_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65001ff13940aa26461bc/t/5fc777e8b2fa4660c8d5a092/1606907881223/mobily_social_application_package.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1bcddd26ff1194f799cbf/t/5fc43378cb3e0f5771d4fb8c/1606693752662/roxbury_high_school_genesis.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_off0000b956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB956 5444 bytes
SHA-256: 2cdec5fed08cc73201d0520764d46756f4a1100c1c840a7bd79a86f7c2cb4058
font_01_sfnt_off0000cbb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB9 10528 bytes
SHA-256: e3882ac1b702eb9afb5398204f7c3e14c3c767d6f7496fa10b8ff33814f29897
font_02_sfnt_off0000eff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF1 16076 bytes
SHA-256: 8e080451972fa98aa9e3536045215e62b9f74f9d761fc20c19baab760c38cae8

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