Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3877e46f7d5889…

MALICIOUS

PDF

54.1 KB Created: 2020-10-30 18:41:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 19dd98091265e0f52bc248f0c94e4d0c SHA-1: de78291dff3f4f7c118aadfcf7204c6fa71beebd SHA-256: 2d3877e46f7d58898977309b0cb4fe31eabf7dcd95a11bd99f97c1fd45844c53
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://cctraff.ru/123?keyword=the+greatest+salesman+in+the+world+summary In PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/c16937fe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f9423f07b6d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_5f8759d786537.pdfIn PDF document text
    • https://refaxezadale.weebly.com/uploads/1/3/4/3/134325555/fbd16bb9c060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387713/normal_5f924583ba6c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375195/normal_5f901e363926a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_5f87caa2a6eaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391340/normal_5f9ba5c5c0fb6.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/24cde8a7b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/jedi_fallen_order_red_lightsaber_mod_ps4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f55de855-6825-48a8-9601-180382c15139/43707563564.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/rimixeda.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/sap_bods_transformations.pdfIn PDF document text
    • https://s3.amazonaws.com/vopadofugon/bora-care_with_mold-care_lowes.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/dawedezewot.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_off00007475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7475 5384 bytes
SHA-256: fb96a952f7bd5d757842b493c71acc37e28f590d32ca0b85279b0d912e1c0496
font_01_sfnt_off000086a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A4 3008 bytes
SHA-256: 5e46820c45e13bf90bf6dd3f0d29015d6a825dc885c8901e9535caa679c5fae7
font_02_sfnt_off00009356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9356 9528 bytes
SHA-256: 827edd67607b8e0ee0ac35370f2b3b0007afcb5abbe446fcc89bf7b9fc5a72a6
font_03_sfnt_off0000b410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB410 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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