Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6cd18f53364706d…

MALICIOUS

PDF

72.4 KB Created: 2021-02-26 00:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7b7fb43121c953e921262a3d5fd72b53 SHA-1: 54349d79bfa9eb59e1731646bacdf8ea9f3e0115 SHA-256: d6cd18f53364706d557923df6eb7ba5506dea503266f9dcc2cff8c1b5f3f0770
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://crophysi.ru/award?keyword=hamilton+beach+flexbrew+instructions In PDF document text
    • http://copyrightshelpscenters.com/gesugatadepikh16t.pdfIn PDF document text
    • http://oneshops.space/tumblr_themes_free_minimalw5bav.pdfIn PDF document text
    • http://poverkavoda.website/system_architecture_diagram_template4zh0e.pdfIn PDF document text
    • http://how2clever.com/implosion_apk_free7oql3.pdfIn PDF document text
    • http://storeplus.pro/chromecast_user_guide3dzkg.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/70906846929.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416796/normal_6007c793a901d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387826/normal_6013645707168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383300/normal_6032dda8a4f1a.pdfIn PDF document text
    • http://smartcreditscore.info/dog_man_book_7_read_aloudiya6j.pdfIn PDF document text
    • http://reflectionss.space/correction_of_sentences_exercises_with_answers4zetx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_6012633521044.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/xjdggjd/basonilelikiwin.pdfIn PDF document text
    • https://cdn.sqhk.co/pubisifibuj/jUSgcig/source_code_editor_for_python.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xomapagovujux.atwebpages.com/gedapisotule.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_off0000de29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE29 5380 bytes
SHA-256: 1454216d5b1252eacb0e57e21c14f8da5e4a1414ecdf835898a505ccae54829c
font_01_sfnt_off0000f060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF060 10492 bytes
SHA-256: 20cdd2a6f760116fac2147d3c882e6f36cfe59feb2d69a8c4c7c2eea2dadf925