Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd7b9486484dc5e0…

MALICIOUS

PDF

49.4 KB Created: 2020-11-06 00:14:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 078ae3f284990fcc9217cb36025a6778 SHA-1: 3a9f3b463f817e97059597212da2956db3fa1664 SHA-256: fd7b9486484dc5e05f5e66ebe56e9455170cfab0ef7ee12673d8fa0d4b235479
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/aws?keyword=unblocked+games+sports PDF link annotation
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/tunitulo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f89fb513130b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405179/normal_5f9a824f5e6f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f9815f13ae98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f8babd9c35c3.pdfIn PDF document text
    • https://dubamuxurel.weebly.com/uploads/1/3/4/4/134463085/mesat.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/502c08f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f954cf10f47c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387711/normal_5f94d689a4fbe.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/39cbbd8bc.pdfIn PDF document text
    • https://tololomajaju.weebly.com/uploads/1/3/4/4/134472688/2397258.pdfIn PDF document text
    • https://vokudaminovisuz.weebly.com/uploads/1/3/4/4/134495340/gufazevebidisoj.pdfIn PDF document text
    • https://xoxajunun.weebly.com/uploads/1/3/4/3/134351876/5a88a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409826/normal_5f9423a4b1d4a.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/65eb7253-041c-4d2d-b95c-f55067d75783/ribonugurupelugefo.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/tegivoneseweb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eaa23aa-89cd-4a2a-b961-5aa4dd106bc5/68231225892.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_off00008242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8242 5588 bytes
SHA-256: 711708d45a10d8930184bb772853a9e508230b6742d37ea90409727b5d30ff88
font_01_sfnt_off0000952d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952D 10448 bytes
SHA-256: 6284cbcd6d22c81fc527e0d8f2f9d7036ac786b0f1bcc9b6e4ccc8d587ae1342