Malicious PDF — malware analysis report

Static analysis result for SHA-256 11e23d887ae04054…

MALICIOUS

PDF

42.8 KB Created: 2020-11-05 06:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: be8913fb952c6cddad585bc44c6af89f SHA-1: dc82d040899c590ea249adbaf7a21ab246810bcd SHA-256: 11e23d887ae04054f289a60d835a4924f91daee20c93c0a383ab2c3ab4135f25
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/123?keyword=wreck+it+ralph+google+drive+mp3 In PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279037.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/madokagijek_pajefesebus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426816/normal_5f9a4239b6d88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409826/normal_5fa2efda6136d.pdfIn PDF document text
    • https://topagolidokade.weebly.com/uploads/1/3/4/5/134502990/wijototimogevuk.pdfIn PDF document text
    • https://nifosigi.weebly.com/uploads/1/3/4/4/134488788/litedoronef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415061/normal_5f9ef05f6fb0c.pdfIn PDF document text
    • https://widuboxizivibib.weebly.com/uploads/1/3/4/3/134315701/tederalunewo-xowux-bibirelubol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426572/normal_5fa32f96df0db.pdfIn 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/fccc1274-7b45-4e69-8aba-9a65c1462b39/sosepuxanivukilozukigemi.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_off00006840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6840 5612 bytes
SHA-256: 08a3a972690fa8a43dac9452563b81b006de183bb14351abda9f05dc975d551b
font_01_sfnt_off00007b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B46 10276 bytes
SHA-256: ab578235346db5d662168416f2ec2847b2a822eb7bb4829ec4b87f6571236ff5