Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be14c41553caa75…

MALICIOUS

PDF

147.3 KB Created: 2020-08-22 03:54:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6e8b47456226198ef639114d27eee2be SHA-1: 706519abf7d1d66461bb2fed184ee8962256d47d SHA-256: 5be14c41553caa75fc2c63d949ca86e848ebafe54f64e54c245a9f24a83e6ac1
94 Risk Score

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://ttraff.cc/pify?keyword=adrenal+crisis+guidelines+pdf'. This URL is the primary indicator of malicious intent, suggesting the document is designed to lure users to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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://ttraff.cc/pify?keyword=adrenal+crisis+guidelines+pdf In PDF document text
    • http://files.lauraavnaim.com/uploads/1/3/0/9/130969819/0ec2ee5.pdfIn PDF document text
    • http://jugaza.ohsmanuals.com/uploads/1/3/1/3/131379591/bopaluro-fimupagu-bamota-pifote.pdfIn PDF document text
    • http://files.cbdrumstudio.com/uploads/1/3/1/6/131607075/bufawemaxijotorot.pdfIn PDF document text
    • http://kamuwumol.sharrattwater.com/uploads/1/3/1/6/131637047/vadudixasamepi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1227/5876/files/jakitufapopomipegadama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/73013639530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6863/4789/files/invertebrate_fossils.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/riwiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/70933146799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/79663782798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/febuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4441/2314/files/55284459712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7994/2812/files/angina_estavel_instavel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/43304447097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4790/3644/files/xedafexurixaporov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1520/8098/files/levezata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/aptitude_interview_questions_and_answers_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6159/8616/files/38589788833.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://www.gnu.org/licenses/gpl.htmlIn 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_off0001d4aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D4AA 5312 bytes
SHA-256: a90e88bd1915c8b5b445f1f05a87481faa10e64321420356a7db2290db87190f
font_01_sfnt_off0001e6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E6B9 6148 bytes
SHA-256: 4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157
font_02_sfnt_off0001f69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F69A 16100 bytes
SHA-256: 6be2636518005f3407f8e560d0b6b1b9380c8f60c3c957944837099c3dcbcb26
font_03_sfnt_off000228e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x228E4 16388 bytes
SHA-256: b790a3c4f860f4f9538cf038cde388395d2ab04003f139f5fa9b5f0395eb24b3

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