Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a7eb44a78c61a77…

MALICIOUS

PDF

66.9 KB Created: 2020-12-09 05:15:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e770dd2a14cb44937aad4c151e3aa4de SHA-1: 22fa7c4276f160b1401c53f439efb5cec9c43e27 SHA-256: 6a7eb44a78c61a77a9c9854aa615931e6a409d8b4fcb143a97b469fbc2790c26
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://traffnew.ru/strik?utm_term=software+testing+basics+for+beginners+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d056c24-0ec1-487f-84f0-751efa8cbe78/debt_free_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fd73acb-5270-4642-bebd-b920b36a5a79/70379542062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d061940f-d5c4-4c0a-8d10-c7a85c28ec72/57867244628.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdfb4c169f3e188a7a7e6b/t/5fcf3f605c8977691e38325e/1607417697107/tik_kik_login_online.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/laduzebawesisitunejiwefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e582a9b1-3000-4598-b959-855a194e22de/9086923602.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/present_simple_exercise_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/sewovimupagutazemujopij.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/the_ugly_duckling_illustrated_story.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49989ee0f32b8749c743/1606371738467/the_ninth_hour.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc006d0104edf1d777bfbd4/t/5fcfb4fb5c8977691e48b2f2/1607447803692/9227288767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b136206-2f72-4280-b7a0-b915060599af/numobofiwitanob.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/9377490495.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/errata_sheet_deposition_federal_rules.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC871 5628 bytes
SHA-256: a6d7977d44f8ff087cdc77d80beab537f298dd7f130a3be70ca3ca329390d0d8
font_01_sfnt_off0000dbb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB8 10312 bytes
SHA-256: 7db82fa82e00617a8d0f9abad065b786e681c243534bb7ba406b9e5d96b19278

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