Malicious PDF — malware analysis report

Static analysis result for SHA-256 dccf2e76997476b8…

MALICIOUS

PDF

37.8 KB Created: 2020-11-08 10:08:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b305dbdcf04016504814d439206c3e16 SHA-1: c03f6971ca66e7417c36ef36e59f57ae1e930df8 SHA-256: dccf2e76997476b8f488e34956d3db3cf903906b86f21db18a36852eabb03d44
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://trafftec.ru/aws?keyword=rac+ct+certification+study+guide PDF link annotation
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/nuxapufowi_nunitoledawa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5f8d6125dd0db.pdfIn PDF document text
    • https://gogozugibijom.weebly.com/uploads/1/3/4/3/134369614/jivike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371267/normal_5fa039f8c7803.pdfIn PDF document text
    • https://lakupemeza.weebly.com/uploads/1/3/4/2/134235705/574218.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vabavoresadi.files.wordpress.com/2020/11/debewasomogoro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5582b408-09bd-4395-afd3-ca75049b5a34/21877890825.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/jebetenujukuzurirer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed6b6d96-f973-4bf3-9f31-22fb148276a2/zalegipixobemadarukekig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fd99a7d-88b4-4fcd-acb4-31ad833c43f3/17748373798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/222cb01d-89de-492e-92b9-aa5a539dfb03/weekly_boat_maintenance_checklist.pdfIn PDF document text
    • https://zusuven.files.wordpress.com/2020/11/baby_brezza_formula_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/xumozepipazezuxa.pdfIn PDF document text
    • https://napabilurer.files.wordpress.com/2020/11/19156447687.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_off0000520b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x520B 5268 bytes
SHA-256: 888e09035503890ae9c92bcf4bba9dc02ac37e6eae07a60dc34fff39b988ef64
font_01_sfnt_off00006414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6414 11360 bytes
SHA-256: 4dafbbdc2f95184877851148987a2a1b41f395cc5317bccc2ff3765d87584e2f