Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8055e43b4f50354…

MALICIOUS

PDF

51.9 KB Created: 2020-10-12 02:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8b1cc1d6faca02050519683dc5612288 SHA-1: 6db5745fe87be75e57d44a83d456a0ebb0292dd7 SHA-256: f8055e43b4f50354ef2b16700e6b3de028cd145391eada2e106fefdbc88bf860
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/pify?keyword=best+med+surg+certification+review+book In PDF document text
    • http://files.robciccotelli.com/uploads/1/3/1/4/131406222/6736361.pdfIn PDF document text
    • http://jusor.crowleyroofers.com/uploads/1/3/2/7/132740948/bamuzusug.pdfIn PDF document text
    • http://files.callaoc8.com/uploads/1/3/1/6/131637224/206fab.pdfIn PDF document text
    • http://files.columbiaclefhangers.com/uploads/1/3/0/8/130874134/pesasotu.pdfIn PDF document text
    • http://files.asset360surplus.com/uploads/1/3/1/6/131607075/difasizezo-waxizivesawod-kidodapefawa-dimoke.pdfIn PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/8008298643.pdfIn PDF document text
    • https://site-1039324.mozfiles.com/files/1039324/zidesokigasabejekaga.pdfIn PDF document text
    • https://site-1038494.mozfiles.com/files/1038494/15787933317.pdfIn PDF document text
    • https://site-1038784.mozfiles.com/files/1038784/56345024010.pdfIn PDF document text
    • https://site-1038958.mozfiles.com/files/1038958/83752973043.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/835b05ba-237f-416d-ac0e-166bd6e1dc05/95781212722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56746400-7ebd-41aa-8c8e-11f1e2fe5e78/kawufimipegezejerufugafir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70047ddd-2616-4402-aacb-6ce78fb35de9/11982206755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18acb663-061c-404c-bb5a-6ff9e2cbdc26/14632137825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/solla_solew_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3741/5831/files/kigogozunesevosekaxuzubom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2772/5477/files/70020712858.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_off00008887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8887 5716 bytes
SHA-256: 929798d2d811f9e10eb6fb87efdb06d69151706f21efa37614ee931475d6f5a3
font_01_sfnt_off00009bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF1 11364 bytes
SHA-256: 12358951ca7e585282600b60136c3dbc3247ea6d1452f32eef82c6cf4e7a64d4

Open this report in the interactive analyzer, or submit your own file for analysis.