Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae95ae56e71048c…

MALICIOUS

PDF

60.0 KB Created: 2020-12-15 06:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 820b8ad09f8d1a101565fb12cc663b3f SHA-1: b80a8b708f691917211e3a31d2b7590bd84796b5 SHA-256: cae95ae56e71048cb8d9e7d6c52294be1f48490243d92d8d038688ca421a25e9
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 critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=little+tikes+cozy+coupe+shopping+cart+ride+on'. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for a phishing attack or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=little+tikes+cozy+coupe+shopping+cart+ride+on In PDF document text
    • https://mabogafopesusa.weebly.com/uploads/1/3/4/3/134307699/1f8f8.pdfIn PDF document text
    • https://gededojoseg.weebly.com/uploads/1/3/4/3/134341448/8870294.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412174/normal_5fc74c75e656f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422378/normal_5fa7a4f432c92.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e0ef95b-f469-4d90-9115-54a5454c0db7/zelolen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6c7f6c9-adb9-41d9-924b-1dc39fc24f6d/fewukijapepabib.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50ae4a13a450bab0f051b/t/5fcd613dd336b863f0d4bc65/1607295293428/kegulur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0141434e-1e0b-4d68-b2bf-6b3341ad7f32/gagaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8165441-9674-4857-84f3-639ffc3d63a0/kenmore_series_700_washer_reviews.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52d2ebe9b69395126b4b8/t/5fcf47f2798354522d0c5507/1607419890454/datevofepedakusewekixunak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14b5188e-478c-4082-bd1c-65028fd69750/61333408894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf462a63-ed6f-4648-bacb-17f0c3aa8795/2099252965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c435a5ca-6287-4074-a499-f263d93df543/bejexabogogoba.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_off0000adc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADC5 5492 bytes
SHA-256: 2ba782441081be72137a86e992f40a7f693a85befcd1c382939656bdf035c998
font_01_sfnt_off0000c07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC07F 9792 bytes
SHA-256: bece985ac9e4e8d303c15d58fd3f5748225d2cc83725c28851cbf8ecafcb7ffe

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