Malicious PDF — malware analysis report

Static analysis result for SHA-256 2259d795f2c92bac…

MALICIOUS

PDF

53.3 KB Created: 2020-11-09 10:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d7ed72f0a22c123a338b9d32aed1ccb6 SHA-1: d372345be6d1b9c76da8078b3780711cc428fd56 SHA-256: 2259d795f2c92bac3fb986680dea149bb0a8505e98f43ebab0d50c88de7c8af8
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://gettraff.ru/aws?keyword=german+ww2+paratrooper+gear In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407327/normal_5f93c4633bdbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404727/normal_5fa4c21a7c75a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_5fa1132b3126e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5f9f955e5a7c7.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/sezutuma/modern_welding_11th_edition_answer_key_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9553e16-7f77-4b45-bc29-ef14369e3d6d/more_brilliant_than_the_sun_kodwo_eshun.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/digital_india_awards_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/larson_algebra_2_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eff6cabd-f9a6-4cfd-9ab5-2edb1226c0ba/82219525453.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/48531636453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf46a9bd-a0c1-4e2d-8fb5-4397f2b2642c/social_comparison_social_media_and_self-esteem.pdfIn PDF document text
    • https://s3.amazonaws.com/xebareto/nfs_hp_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/winavigo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F14 5184 bytes
SHA-256: 5061318ec459cdf5663f3b47e0264c7901b9d52e2585ec48cbd6e7daaf049c2e
font_01_sfnt_off0000a0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B5 12172 bytes
SHA-256: 1bedcbf550d6712768c0eedbf8ed9619f1b28ac75cfa44727693762a97c7355a

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