PDF static analysis report

Static analysis result for SHA-256 a77840bcfe07becc…

SUSPICIOUS

PDF

39.6 KB Created: 2020-11-06 02:14:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ab8aa5f30975cc2ce25dbc3d0d4a592b SHA-1: 9cdfa25beb1abfdbd84441025186e0e5127c4d78 SHA-256: a77840bcfe07beccf7c1519fa330012d0475718a2ea77b4c5f5f14fb60833282
44 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document was flagged as suspicious by an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/aws?keyword=cbrn+study+guide+army PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387565/normal_5f9db9c2345d5.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/26a2e4c5-2c86-4ce1-aaae-0a489c2467c7/78478350650.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76dc039c-043b-4c0b-a418-fdff0387965b/11729181134.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e35a3c5-1ff4-492b-abe8-4a23b7301bd3/fabivinikuremagulositufet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d55bf568-f313-4a2f-92f1-d7cfb441bab3/97893674310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4847353b-bcc9-465c-a342-8b1979f21a0f/budisilipumuzezofamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd4b4568-dd22-42d2-98c2-e026c399c945/nakugenotevubadadumomasal.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/nhl_ticket_exchange_ticketmaster_login.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37dd5259-e70d-49c3-b761-288d79d248bd/1.3_8_as_a_decimal.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_off00005c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C98 5260 bytes
SHA-256: d9ae3389817316e6a2bccc3c8cf398a80c1905f77b158462036c1de6c47f49c9
font_01_sfnt_off00006e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E60 10584 bytes
SHA-256: ec0f13d7dc0c6eebe46bcfdd0637700b4ac7a91703b2626b1ee2925133fcf75c