Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e4447c83ff2574…

MALICIOUS

PDF

70.2 KB Created: 2021-03-02 09:13:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 491a7de68c5c0f6f39b1c1fd09c715ec SHA-1: 3976f81d59e3c3d5159b8e4f336d9b78d7638877 SHA-256: 67e4447c83ff2574255a11af2f8c1f8c34cdf089aae80714a2804987ed3584aa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/award?keyword=what+were+the+goals+of+reconstruction+quizlet PDF link annotation
    • http://frontend-developer-azaynullin.site/thomas_calculus_book_11th_editionbolpa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_60313016b4ebd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484990/normal_603b1c9a41d93.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/mark_allen_weiss_data_structures_and_algorithm_analysis_in_c_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454808/normal_60275cf317437.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rubuvajaroxe.epizy.com/delogogeti.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/alkanes_lecture_notes.pdfIn PDF document text
    • http://nonavijewiw.epizy.com/html_color_code_in_rgb_format.pdfIn PDF document text
    • http://fiwabafedazuv.epizy.com/tulotaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/48028104914.pdfIn PDF document text
    • http://lilisav.epizy.com/how_to_view_cached_pages_chrome_android.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_off0000d695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD695 5424 bytes
SHA-256: c430df24a169c85c06efd1506fc9c1ab3e05fa0675ebfa2e1ac2290d931ac5c8
font_01_sfnt_off0000e92a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92A 10348 bytes
SHA-256: a1c1e488b45a0249a4f1e4879970738eed33365cfc3d7fd79dd16edc803f7ea9