Malicious PDF — malware analysis report

Static analysis result for SHA-256 19812dbd47fd20ea…

MALICIOUS

PDF

39.9 KB Created: 2020-11-03 21:24:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6718a9c7326128813769c7321eb15fa3 SHA-1: d868b1d96ca44d90adc70de28ccb1eb0c97a5253 SHA-256: 19812dbd47fd20ea763220ea07b9d6da7b36202dc1743f5076a5e2ad3736faf0
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/aws?keyword=ospf+hello+packet+fields In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414159/normal_5f99350824aa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416502/normal_5f97a388b640f.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/zuxadol/synonyms_antonyms_list_competitive_exams.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/aua_guidelines_prostate_cancer_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/samsung_rf260beaesr_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/luwomuzuremiwakax.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/vukavubige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f096084-a812-4a08-bbfd-373d80e1435d/rosephanye_powell_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6b6d341-cc16-4706-be9e-b6af616cd3c7/44530500081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7ce1673-4f0d-4152-ba2f-740e3563ba6a/majopotipoxenema.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_off00005dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBA 5236 bytes
SHA-256: a44dcafc831dbd9d9f623b7e3abcd9c7d937a832e65f34661d68405c52041e32
font_01_sfnt_off00006f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F86 10464 bytes
SHA-256: 9bb0d9bad81b76a65dcc02c7f2382f9168322987e87809d21740ef1f881d5b77

Open this report in the interactive analyzer, or submit your own file for analysis.