Malicious PDF — malware analysis report

Static analysis result for SHA-256 4056319549229c82…

MALICIOUS

PDF

72.3 KB Created: 2021-02-13 02:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0ecd674936e07f2f9278ba44a9183c57 SHA-1: 93238b534ff0d772bea742e411fb83f48aba7e7a SHA-256: 4056319549229c820061624939c24982171de4c8a02875a51a67a5f8f2f7ab6e
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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/wix?keyword=hollywood+screenwriting+directory+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4496391/normal_6002367467683.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_600fd40c429ba.pdfIn PDF document text
    • https://patinijogu.weebly.com/uploads/1/3/4/8/134854147/5967501.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450630/normal_5ff5d3e2881f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479674/normal_600ebc587026b.pdfIn PDF document text
    • http://zalavsky.ru/free_bartender_label_softwareenut4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368741/normal_5fffa8e7e9cad.pdfIn PDF document text
    • http://quinzsy-studio.design/grand_canyon_village_weather_reportid3sh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475572/normal_6021d595eb8a1.pdfIn PDF document text
    • https://dokerawu.weebly.com/uploads/1/3/4/3/134313580/890c22df712416.pdfIn PDF document text
    • https://gixefizavemo.weebly.com/uploads/1/3/4/1/134108956/xizezekapixalukopo.pdfIn PDF document text
    • http://importants.space/ikea_kitchen_doors_faktumqahnd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409246/normal_600a50f34aebf.pdfIn PDF document text
    • https://nakidero.weebly.com/uploads/1/3/4/5/134524904/7107382.pdfIn PDF document text
    • http://trikolor.site/75310319019p4910.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403817/normal_6008d27d8abad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375356/normal_600433d90016f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385202/normal_5fced99dc256b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zafaronivaj/complete_idiot_s_guide_statistics_2nd.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11B 5056 bytes
SHA-256: b3d1579f21269cabecfdef4eb956c1d603d874de378eaa700774461953be69ca
font_01_sfnt_off0000e271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE271 10224 bytes
SHA-256: 29dfe663f948bebde4ddc7ce9e66ce29b07f444ee1f538a5eb2266ef04caef78
font_02_sfnt_off00010569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10569 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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