Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a354d69ea8d9fbd…

MALICIOUS

PDF

42.7 KB Created: 2020-11-02 02:14:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7a27815e34128a69ef5d2f4c7e749c64 SHA-1: dc9e668cd42b5b149dffd7ce50d81421ef4d1de8 SHA-256: 9a354d69ea8d9fbd199c7e67dd85bdab662844a1dd194ef7891f03ddf26a595c
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/pify?keyword=2019+2020+calendar+printable+with+notes', is presented within the document body, disguised as a calendar printable, likely to lure the user into clicking it. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=2019+2020+calendar+printable+with+notes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f9048f77659c.pdfIn PDF document text
    • https://wanuwoziburake.weebly.com/uploads/1/3/4/4/134458428/6801164.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/ead64c6e.pdfIn PDF document text
    • https://filafibiwi.weebly.com/uploads/1/3/4/3/134316544/zivijaxakipelu.pdfIn PDF document text
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/fovilatema.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/firigugixujotov/10503421718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1838/7107/files/24239872278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39405d98-b87f-4fd9-9108-e675d3ade33f/26216522339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b349e97-a2b8-4320-ab9c-5e16c25c9e9b/rakexetopefup.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA7 5568 bytes
SHA-256: fbf026003f3bca4c82bad8a96383605ff587093bd05d13a3d4335b4a17156ae5
font_01_sfnt_off00006d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D85 10084 bytes
SHA-256: 8652826e86f7ca2d2ed2d3779b6c68450ac4d15fcf4c3605d411786a9f239262
font_02_sfnt_off0000900d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2