Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1a2325c8ddab56…

MALICIOUS

PDF

55.6 KB Created: 2020-11-02 20:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7cc09898531eae8f67de2349b988ec55 SHA-1: 2330ea45959dcedf81dd8349b8d5fd5df91381a4 SHA-256: be1a2325c8ddab562f972093c57c43c55eb01edb70279b3f5f8fcfede83cefe1
94 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 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 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.link/123?keyword=metamorphic+geode+runescape In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5f8e26d3d2f52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f874fbb685b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5f8e5a716bc3b.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://uploads.strikinglycdn.com/files/8bc45b15-c0e3-4201-b7af-bf1f2ebebf83/xakimafedinijebanamepugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caf63ce3-c9ac-4138-a646-a951da24c10a/63391965291.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6aa8f41-8245-4e48-8245-29d40a24427c/vintage_tupperware_rice_steamer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c4ac98c-c276-4620-a416-15a04d3d53cf/83946291522.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/ati_teas_study_manual__sixth_edition_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/towusavobam.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/star_wars_audio_books_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/954e36c9-ee3a-4b0a-8128-4cb1850b7514/68651722462.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/canada_food_guide_old.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/vokiwabitifojabinosoraja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27a2b239-a150-4bfc-ad99-6581ad46cd0b/tosikusasaxan.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_off00006b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9C 5344 bytes
SHA-256: 9d5ac2c87a2a8c95885f19b6acd862c8fe420dce109735f8647f0d9577448365
font_01_sfnt_off00007d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9C 14664 bytes
SHA-256: eeed49c3f2fc3e27605f2137bd72bf9faaa2aa4901c8d06145fc4a00415fbd4c
font_02_sfnt_off0000ad73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD73 16172 bytes
SHA-256: 32c96e402b6c01f9997dec839efd7beca0095255b57c12961625e2b5410660bf
font_03_sfnt_off0000c27c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC27C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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