Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad5884b92dc4a73…

MALICIOUS

PDF

73.1 KB Created: 2020-11-03 12:23:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3a1803ff9e63175c948184c390f14e85 SHA-1: d76db26212f8774fed9d389ec12daf359649d3c6 SHA-256: aad5884b92dc4a731f23cc9f11e6c04dc7cc19b4d23db5d9af5fde4ba604d1ab
94 Risk Score

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://ttraff.cc/123?keyword=analysis+for+financial+management+pdf+higgins In PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/dozafawegikuxoto.pdfIn PDF document text
    • https://lewutiresapilo.weebly.com/uploads/1/3/4/5/134594640/2328871.pdfIn PDF document text
    • https://genifefesabido.weebly.com/uploads/1/3/3/9/133999330/lopar-pixumipumivip.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/1/0509/2999/1840/files/dying_to_be_me.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/man_on_the_street_interviews_microphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de95eabc-50a4-4005-8bd3-15950a1c1962/saving_francesca_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e931a89c-897c-4fd0-ad46-7dbf233c5a28/vintage_victorian_style_wedding_dresses.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/edit_documents_linux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a42d2d7b-e061-4d52-a303-e560a6a624a7/5464728318.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/basic_statistical_analysis_richard_c_sprinthall.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBB 3072 bytes
SHA-256: 7f54252e86245c8826fafba8de6a38072568bfa1d4b6d30dc85d754cafb59d71
font_01_sfnt_off0000d6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BB 5660 bytes
SHA-256: d44a11024890efd8dea00f688d1616d631d8324da8660bb7bb64ddaf384decf7
font_02_sfnt_off0000e9de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DE 13528 bytes
SHA-256: 8a163c4b22686bb4c39a5c649a85dcbc63bb1af7fb3dea321f026e0236cc6c74