Malicious PDF — malware analysis report

Static analysis result for SHA-256 468094437522ccb2…

MALICIOUS

PDF

71.1 KB Created: 2021-02-11 21:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 09606f0f71cf29a5b3e8f926809a1ba6 SHA-1: e22a30ee5442522715f7a3f45cf40049c9759bbc SHA-256: 468094437522ccb2a94a95cf453ff5566a5dae20b27aefda94ace40a71c2df23
184 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
  • 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/wb?keyword=transformer%20bumblebee%20coloring%20pages In PDF document text
    • https://static.s123-cdn-static.com/uploads/4452608/normal_5fe35f3842882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503584/normal_600e304acf52c.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/Yhcgilm/amtrak_auto_train_sanford_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/Nge6haz/bagiluga.pdfIn PDF document text
    • http://temppicture.xyz/91093307652rqx1z.pdfIn PDF document text
    • https://cdn.sqhk.co/bowawugafux/gSheQTX/befovijiriludogodubux.pdfIn PDF document text
    • http://usmileofficial.site/vsco_apk_full_packjnjzy.pdfIn PDF document text
    • http://btsworld.org/burimexesuxey1hjt.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/ghbicig/dental_assistant_jobs_hiring_near_me.pdfIn PDF document text
    • http://easy-money-cash.space/3023746405589k8y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473388/normal_5fe0e9965eb51.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zikenonuto.epizy.com/gedodunitiposafonowudun.pdfIn PDF document text
    • http://gavojomizam.epizy.com/godapagoneladekugobaz.pdfIn PDF document text
    • http://kazoverowagodi.epizy.com/pink_linen_sheets_uk.pdfIn PDF document text
    • http://mudotepejix.epizy.com/zowefimiwokojofezebubir.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_off0000d8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E4 5424 bytes
SHA-256: 157950ffba7c757273fc120561c97804a55db2888264a110baa135d3ebf67d1d
font_01_sfnt_off0000eb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3D 10560 bytes
SHA-256: bff43f39810a83a9af8984e434e088e1e4a4c7c6bfa5860199ad68f7403eac4c