Malicious PDF — malware analysis report

Static analysis result for SHA-256 817d94a51ea9aed8…

MALICIOUS

PDF

44.9 KB Created: 2020-11-06 14:34:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 6b08b0e40d3b50efe5754f3f977ba5be SHA-1: 6f15700ec21c990ad20d6c07373f538f1a073a02 SHA-256: 817d94a51ea9aed822835052f544a082d7e372c4678b59d0d0e7b80a02952394
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=old+database+platforms PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5f8b55399b2e5.pdfIn PDF document text
    • https://bemaxeviliw.weebly.com/uploads/1/3/4/4/134482954/nuratelaku-denovigariwa-wegewovizidas-ruzimi.pdfIn PDF document text
    • https://rofetidol.weebly.com/uploads/1/3/4/3/134322454/b5ef48d.pdfIn PDF document text
    • https://misutinulil.weebly.com/uploads/1/3/1/4/131407711/1754145.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/sowulixa.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/fibawubaxavuvabu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375351/normal_5f8fb307f0c66.pdfIn PDF document text
    • https://larogarokod.weebly.com/uploads/1/3/4/0/134018293/6165161.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/e192766d-bc13-4b71-8165-eb04ca78b45e/hello_neighbor_act_1_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/vector_triple_product_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e907f658-26e3-4b4d-b6f5-2f9c4a89c950/taretudiwukala.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/schwinn_240_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36c070e6-61a1-4d20-b351-5c568575502e/12427996918.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_off00006265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6265 4988 bytes
SHA-256: 6db20c90b5bdb9ef0042cbd422150b14f9c99b6e25d3f0f256d7cd462fc3971e
font_01_sfnt_off0000735b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735B 10672 bytes
SHA-256: 0fa97e926fa885ddba3cfc8e9ae67539ebb1614a46dce0623d2bd8ddd04b7f66
font_02_sfnt_off000097a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e