Malicious PDF — malware analysis report

Static analysis result for SHA-256 24f1e27ad92bb155…

MALICIOUS

PDF

82.5 KB Created: 2021-04-08 21:48:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: dd4085f5a8f2c3e20d9544ac38b71bcd SHA-1: d81102420c5d5b24b099447a8909d66e4d4c9f48 SHA-256: 24f1e27ad92bb15517e8e4b41dbf64f7b27f1d1c743a0aa6d5917f605448c22d
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of the malicious URL and the heuristic findings suggest an attempt to redirect the user to a harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://kuzutuzo.ru/strik?utm_term=can+you+play+the+sims+3+on+macbook+air PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378175/normal_5ff14d7ad9c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418970/normal_605ad4a6a751f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_60663418c9f01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493201/normal_601f9b3325f4c.pdfIn PDF document text
    • http://dkblogin-de.best/list_of_ap_physics_1_units3vlm0.pdfIn PDF document text
    • https://bileravufal.weebly.com/uploads/1/3/4/7/134749654/novakopixojonebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416919/normal_6055021a5ff7c.pdfIn PDF document text
    • https://zizobisorodevu.weebly.com/uploads/1/3/5/9/135964877/1823d3ff.pdfIn PDF document text
    • http://instapriz.site/403313756487jy7o.pdfIn PDF document text
    • http://govnosiakxws.online/jquery_ajax_dropdown_example_in_phpvwpae.pdfIn PDF document text
    • https://vipekisurular.weebly.com/uploads/1/3/1/4/131453387/e9ccf8707086.pdfIn PDF document text
    • http://smartcreditus.info/wow_legion_warlock_demonology_guidec3sz3.pdfIn PDF document text
    • http://redtea.space/mewotanic8s.pdfIn PDF document text
    • https://galanutix.weebly.com/uploads/1/3/4/5/134591813/rumanepox.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/e918bea0-26be-48b4-ba7f-ec750218f53d/79799309565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fc19a08-f599-468d-91d0-6e5a4cbd607a/lenudoxobumotemozixuja.pdfIn PDF document text
    • https://2e5cbe44-7de3-4e3f-b94c-8a8567814465.filesusr.com/ugd/f96b02_1ecea9194e714235a92ddd18eec27088.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/af5c158c-3b82-48e0-a9cf-d0e42312365d/41623027519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/007c19b5-5f2b-4211-b3c4-4f6170e4cd5b/51121897925.pdfIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_1e933264309a4d7d9eec2fc91d557d54.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/87418555347.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/who_has_been_on_the_cover_of_sports_illustrated_the_most_times.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/wasegibumumenuwosupiraj.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/anesthesia_technician_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/payment_synonym_formal.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_off000103ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CA 5548 bytes
SHA-256: 2fff98a636aaf542c0da0a2b1d91765b98a98576f4a122d5082c576630a8e100
font_01_sfnt_off0001167f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1167F 11048 bytes
SHA-256: 84a1f2c5d6dd546ded2bb5f1254ed5c599431845f180399c34074b75e2a478c6

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