Malicious PDF — malware analysis report

Static analysis result for SHA-256 976b404f97ad31ce…

MALICIOUS

PDF

39.1 KB Created: 2020-10-27 23:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 71e4f0050f51fcd1c6982025ccb1ca52 SHA-1: db158fee6eabccd29f4b55dec0b1c0b0a3abf703 SHA-256: 976b404f97ad31ceb658db6e759f24ec91ed8257019710fbce788856b9c540ee
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://ggtraff.ru/strik?keyword=final+countdown+bass+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5f8a5d96486c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408188/normal_5f97c92dbfb08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5f889df74d447.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f96840bb1d89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_5f93e07c28630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381766/normal_5f8e278bea46c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381108/normal_5f95d7f7d7b16.pdfIn PDF document text
    • https://jugubiwujivivej.weebly.com/uploads/1/3/4/3/134352954/xaxiwedenufo.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/987b21c6b.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/xukerupa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/niwugugumuvuvodik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0655/7859/files/amish_paradise_song_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8391/5962/files/positive_affirmations_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4ab026-7f1c-4b20-bf64-90045c7bbba5/konul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/596fed4f-15e6-4782-a062-cde32fd65392/kudis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f61fcd0-914b-4205-af08-c8378ad56505/feloze.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/tests_for_aldehydes_and_ketones.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/jesus_bleibet_meine_freude_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/20900839888.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/difference_between_analog_and_digital_signal_processing.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/pdf417_2d_barcode_format.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_off0000572e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x572E 5240 bytes
SHA-256: 26425a32c8ef1c1a335d6b2cd20ec3428256a7e52650b65cc435abb93164a6f6
font_01_sfnt_off0000691e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691E 11044 bytes
SHA-256: c4267eea5843f65b7bdb955f1cdcab14b6852101572c3d225396a6214de07ce6

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