Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea808cb8ac6a22a6…

MALICIOUS

PDF

51.9 KB Created: 2020-10-27 11:01:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1585aec0a3890533e1c7a0da601c507a SHA-1: 9f3dc7c19ebfd363f17fbbfb6a7f0733dfbe2d11 SHA-256: ea808cb8ac6a22a6cb04b16ff2f4d44ebc000188b7639bc9cef084740d8c11fd
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to a URL that is likely used to host a malicious payload. The ML classifier also flagged this PDF with high confidence. The embedded URL in the document body, 'https://gettraff.ru/strik?keyword=cwna+guide+to+wireless+lans+3rd+edition+pdf', is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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/strik?keyword=cwna+guide+to+wireless+lans+3rd+edition+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393515/normal_5f922f42d7a68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_5f937e2de7b41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f87884b1cbbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f9520df66f82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5f9380048171b.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/curriculum_vitae.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/gusivekegedosoravizu.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/2d_array_in_c_programming_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/17934737788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd464b1c-8c47-4ac4-89fc-19cefd097b90/mansfield.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ed398d-f3fe-4f70-8704-55399995ccc4/xasunipizuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c25f61b-4f18-455f-bd23-fc557468bfa0/57834642477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcee3fa9-1af5-4ca2-9d85-0143689e4621/59275283925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44685882-f731-48e3-9063-9fb28ae51c04/test_de_inteligencia_multiple_para_i.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/tinorodifod.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/beauty_and_the_beast_by_jeanne-_marie_leprince_de_beaumont.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/16139645065.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/convert_to_word_desktop_software_version_5._3._0_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0605a4e9-824c-4072-996f-420854744a1b/39954029741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f22351-4e7d-4fd8-b2cc-f3fb8805b25a/what_is_vizio_d_series.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00008adb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8ADB 7584 bytes
SHA-256: 96823c4a3fb50fa891cdfefdcef86fbc297981a0d0c92d86db79de458d08fdd3
font_00_sfnt_off00007881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7881 5368 bytes
SHA-256: b6021171c4de65fd4fc775625f8ed019d4f6027b14b8e9d2c5727bea31766f49
font_02_sfnt_off00009f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F2E 10020 bytes
SHA-256: d9e2c9ffb4ef50e4ca37f5dfc8fe4980b70145c9c5e35dc51a7dbda947313e5d

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