Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5866b7f3f947ea0…

MALICIOUS

PDF

39.4 KB Created: 2020-11-03 10:34:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e900c71179dd245efb201e40102e30c5 SHA-1: 4ad42cf431810d661a6146c2a705ef3dea398ac3 SHA-256: d5866b7f3f947ea02e5826707a390e4bd2fa3bb96e6812decc9d988d3359e8eb
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://cctraff.ru/aws?keyword=wells+fargo+near+me+dc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f8f547a96156.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/kibafa-guvireridiwer-vusamatof-zafusudade.pdfIn PDF document text
    • https://mujonutuxow.weebly.com/uploads/1/3/4/3/134336111/vesiki.pdfIn PDF document text
    • https://nonudefetug.weebly.com/uploads/1/3/4/3/134314303/8775842.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/1/0502/7813/8018/files/xepaboruki.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/pusejevaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/9436/5125/files/blue_grama_grass_seed_colorado.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/ibps_clerk_online_application_2019_notification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7981/0203/files/7066395560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9773/4333/files/toxetugem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7773/3019/files/4360251692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/4544/2503/files/bukoberunonazaworodogilaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de11c7da-d86f-48d2-893d-fb34c2a03fd1/kukun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96f816d8-885f-4751-959a-1e3dba1299ee/civilization_6_trainers.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_off00005bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFE 5352 bytes
SHA-256: 8146f596b49eb0c949a94642ab2c73d262064abe12fb52acc220d8b2ee5eef88
font_01_sfnt_off00006e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2C 10332 bytes
SHA-256: 737a1417e92ad7df8faef9bbca1b451495b723fe0079e4f8150ffe89ccae19f1