Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec904b01374d6ca4…

MALICIOUS

PDF

46.7 KB Created: 2020-10-28 19:50:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e5b043864a7ef0251a20a821a8ac38e2 SHA-1: de731be6377e144d33ad8e96efb6e5cdb801c251 SHA-256: ec904b01374d6ca48d7c99958e43af6a987ecc3baaf545e97b497efc91aceb8f
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/strik?keyword=another+word+for+controlling+and+bossy In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8549216-11a2-4277-8930-f290eb72ca13/7568983339.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/josezifibin.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/wuvimosenapewejawusuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dca52070-ff6f-45c6-bee2-c2aa8b2ed9e2/claymore_manga_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/portable_car_ac_target.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b50aebd8-daf3-401f-9e2a-1652cb43af7c/polaroid_iex29_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72bd5372-d819-4838-93a3-4e5d362d37a3/wapekubumome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9842419e-9aae-468f-b4f0-807969c2399c/kozederadaxofe.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/dawilefamupototi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51498784-cfea-4f0c-8034-40cb14f36c46/98838448837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de17674a-9242-4bfe-a475-e29a61f9608d/tololugu.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/tumaropamexasaditemal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e66052d-740d-4a1a-9ffe-bbe39688d999/picture_of_convergent_boundary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe2ab9c-7924-4bd4-8d23-d75bcbc79f7e/lakudoletowovifojelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca720d0-fd6d-4939-8ea0-c2e98801ddd9/66365936273.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/ethiopian_amharic_books_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/ielts_general_reading_practice_test_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c00646-8a7b-4700-b5ef-dc43707e0126/jazarodonedit.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/gejedojuxuxapove.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_off00007435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7435 5608 bytes
SHA-256: 6965892b11c353c4074837ad37d0d75bf86be8886353f4476e8be02d56a5204c
font_01_sfnt_off0000875a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875A 11212 bytes
SHA-256: a7fffdbdb2e932cf62e601252e69c9f52fa0695bee13f094ecc97b81c1dbb2e8

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