Malicious PDF — malware analysis report

Static analysis result for SHA-256 7befd6ceb0ef7235…

MALICIOUS

PDF

128.9 KB Created: 2020-12-07 12:53:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a790531efad6d0a2045029950d4a4455 SHA-1: 9b7a8e5f53df7b42f32dc8ce9d9d3b9b598ff50b SHA-256: 7befd6ceb0ef723566227bf29e662f5fa4280f93f4a94cbd3ca229b7af757100
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=aircrack-+ng+untuk+android', which is designed to lure users to potentially harmful content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest an attempt to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=aircrack-+ng+untuk+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4470980/normal_5fc0e5b59242a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459177/normal_5fba0b783c3e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408177/normal_5faaaa89ca883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409110/normal_5fa367b84d08a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467038/normal_5fb363979043e.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
    • https://s3.amazonaws.com/dekogamik/landing_page_website_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/plague_inc_prion_mega_brutal_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c6758139af0376668248/t/5fcc2bb12bc7884852a5b7ef/1607216049418/sipogolen.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/bitakikudejumibex.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/automate_the_boring_stuff_with_python_download_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5389b8139af0376616de8/t/5fcdfd4f1e1a4d7de14f8e4d/1607335249784/top_rated_free_ringtones_for_iphone_app.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf57aff3de5e49b55b764c/1606375344156/house_on_mango_street_book_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/47564384400.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/dimensional_analysis_chemistry_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/82059805640.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3612fc6229360ecbcc3d9/t/5fc9b4f987b36f46d4fd341e/1607054587429/45989666725.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001b5bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1B5BD 28188 bytes
SHA-256: d93c802caf217a0f8390e6581afb1bb4442bfc76af70db288fee4d04cf3e45a4
font_00_sfnt_off000169cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169CC 2880 bytes
SHA-256: 619a44e8b5c2a2d3fc0e18259d8022938ad4f8b30552901bc68dc41c3d0f2ef0
font_01_sfnt_off0001740a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1740A 4744 bytes
SHA-256: 202ab320856e9e4aaca0095eba90e59dd7cb9ccd59e68b0ada1f252cb2dc8f20
font_02_sfnt_off0001842a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1842A 14544 bytes
SHA-256: 1144878f5f1b615d261ba4b1d5b6e0a36a799f36e9e0c200a50f48880dbcfe2f
font_04_sfnt_off0001e7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E7B7 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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