PDF static analysis report

Static analysis result for SHA-256 5722353f85e97ad1…

SUSPICIOUS

PDF

45.2 KB Created: 2020-11-06 05:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3453f7a64927dada125c7584ea7267f5 SHA-1: 398de6b1826bc74b39d6e028bb3a473b139d145e SHA-256: 5722353f85e97ad1b9e55a299347f79733fb04f428112b366ee7b441e23cf17a
36 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a site offering app downloads, suggesting a lure for potentially malicious software. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of an external URI and the overall suspicious nature indicated by the ML model point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://trafffe.ru/123?keyword=app+market+apk+download+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f86fc104b2c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368474/normal_5f89320799a01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411919/normal_5f9baa49ae1ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f6ad4cbc-6c91-4d9b-91ae-46da9a04515c/geruji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d6f13c6-f101-4f98-9d11-e6317f5eb2b0/nemazoradolawekabapijer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6b9ff16-7845-404e-b194-849e6506fc37/15961209887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b2b679d-2ea9-40e9-a25d-59c2c5c167d0/99174703799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e974aa5-3c11-4d21-9c22-75c423941c6f/list_of_english_words_with_silent_h.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/fifijadanunukuri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2578309f-3793-4dcf-9c62-61f965bb2c2a/skyrim_product_key_free.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_off00006426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6426 5036 bytes
SHA-256: e25d4eda8fdbb9472b27eab197fdbba77efc00e2f7c2a60ca8aa90fb497c1926
font_01_sfnt_off00007532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7532 10784 bytes
SHA-256: cc8592e49342210018d8808caf5a93f0d04a6fcd72be2c05d736bc52fa0cb12c
font_02_sfnt_off00009a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A2E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2