Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab00d61060e573fe…

MALICIOUS

PDF

103.2 KB Created: 2020-11-24 21:07:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 09a0d9ea6fd79b3a61300ac69166b40a SHA-1: 11c9f8793c99814e974ceb21d423d851ba6d4180 SHA-256: ab00d61060e573feaaea7bfc88748c47f72e565f2bebcb7d27fb3af2283d2548
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffmen.ru/123?utm_term=fact+vs+absolute+truth In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5fbb803d46b66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5f8c136d9f7b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5f8776d260010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453326/normal_5fb951a707b83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5f908e691ea68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f895c48d33b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385634/normal_5f8cf7d3b0b84.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/3bc20631-226a-4a6b-933d-c2dfd6dfbcc8/meruvinexumituxerini.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/borderlands_3_zane_leveling_build_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c6dc4d-8a47-4793-8582-91f1d1a092bc/16187284080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e123800-f752-41cb-b64c-6d25a98a7f29/ppsspp_download_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4d04774-c548-4dab-a902-0827548343f3/rsum_phdre_scne_par_scne.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9270f12e-9732-47b6-8639-3e9494ae3a6e/87881770594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f8f41e7-4091-4a89-a7a3-e1848ecfd2ef/caderno_com_desenhos_para_colorir_pd.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_off00011045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11045 16792 bytes
SHA-256: 9fd1cdb8cef28b85503376ac34d234836d5cd92110cd330a5f8bff6988f70e81
font_01_sfnt_off00014344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14344 5044 bytes
SHA-256: 2886c26e05466226c7f34af5f28f78440739ddab8e9814e362abf6969a37e96c
font_02_sfnt_off0001546e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1546E 11276 bytes
SHA-256: a5b429203d1c622948e8deb31c55dbf63c70d39140f93432847d395642e0f504
font_03_sfnt_off00017a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A90 16092 bytes
SHA-256: 1d18dda2d36a09c4e609ec625087ee2037e5fbc81a1ec5d64a6c10dc0caec5d2

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