Malicious PDF — malware analysis report

Static analysis result for SHA-256 a377a85cacdc267f…

MALICIOUS

PDF

34.2 KB Created: 2020-11-07 12:59:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 2fd7185f685e37e87955d307d8ee8b67 SHA-1: 1e7df31259cc1f2e2ccbbad8d7219242f34d3374 SHA-256: a377a85cacdc267fdf99981f24c2821f92237ed638d2a40574c44e5030d6b551
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=live+oak+elementary+ga PDF link annotation
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/5525451.pdfIn PDF document text
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/5879865.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/wodij.pdfIn PDF document text
    • https://fapasinexiri.weebly.com/uploads/1/3/4/3/134346339/630a0f4a.pdfIn PDF document text
    • https://vizavidonase.weebly.com/uploads/1/3/4/0/134040461/fibudeg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://nekufinomo.files.wordpress.com/2020/11/40057740645.pdfIn PDF document text
    • https://givolajokofe.files.wordpress.com/2020/11/japatewajaliwififu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eeee0b0-c859-4f40-940e-c00019a763c9/64081996747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de04989f-d9b5-4762-9b7d-31169179aa33/kevin_durant_mvp_speech_full_text.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e31d318-40e2-4009-b7c7-76fff502891d/lafozawarogopukiworasez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59f4acda-ed48-4c05-bdb7-968a19c4ee8f/gawovorewawuxavapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c876331-a706-4a37-b103-33b4b5812614/ebony_armor_skyrim_locations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/849d9d11-19ea-435d-a89c-db616862cd22/pikiwizopupubefoso.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_off000047c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47C0 4996 bytes
SHA-256: 616e37166d60e27b8069c745d4220b42c577d18e57b4a45fca900cc3ad0fcf0a
font_01_sfnt_off000058bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58BF 10488 bytes
SHA-256: 9d04e0832623a2af3ce164c48f5537da1b38b90f63e805031fb1f3dbdcfe0b37