Malicious PDF — malware analysis report

Static analysis result for SHA-256 da640a421d9d6799…

MALICIOUS

PDF

69.5 KB Created: 2021-02-06 07:53:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: abacd594317e675f924b245242e50981 SHA-1: e112f9ff61c4e9cc6970775317841e7f03e67fd3 SHA-256: da640a421d9d67999e90371cbc24518ddf0f20e7d3d2417044c4033754f9a5e3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/infin?keyword=android+studio+kotlin+unresolved+reference+r PDF link annotation
    • https://metuliwilive.weebly.com/uploads/1/3/4/3/134386481/0ef942ac263271.pdfIn PDF document text
    • http://flowerport.market/fakozororexinugemg7tw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_60040dc7d0fc6.pdfIn PDF document text
    • https://cdn.sqhk.co/pemenixa/idghifR/98214318339.pdfIn PDF document text
    • http://chelamela.org/que_es_abrogar_y_derogarhbc9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451561/normal_601de939b8cc1.pdfIn PDF document text
    • http://vajogeboru.iblogger.org/angular_template_let_observable.pdfIn PDF document text
    • http://basvuruizleme.online/odas_de_horacioicdxj.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/jjuGpjh/fake_caller_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/3axkKg3/pelamag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404990/normal_5feb0b4761f5b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://salalew.epizy.com/brutus_tool_for_windows.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_off0000d231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD231 4920 bytes
SHA-256: 064089344c74d266ec466a788ff27e97c93b480ada6f1166c800cd03a98dc53f
font_01_sfnt_off0000e30f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30F 11176 bytes
SHA-256: 07c03ff5657e1901d873b1f4daec8fb6cb60e43b79d0bb4fa4071743aef44d9b