Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ea0c0932c1ec42…

MALICIOUS

PDF

71.0 KB Created: 2021-02-16 00:12:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 682e208a19573466f53cf52a2ea566f6 SHA-1: ce9dfa18e4ce0b7cc08cb1ce76ec0516440d6735 SHA-256: c6ea0c0932c1ec4201a77efd851bc5581979c8cd6a22ef16825fd1f1e45c64ce
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://yafferge.ru/wix?keyword=last+day+on+earth+survival+cheats+no+verification In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_601be14f45312.pdfIn PDF document text
    • http://obzorov.site/diferena_entre_radiolucido_e_radioprnd41.pdfIn PDF document text
    • http://clubstore.info/75490174783un9tr.pdfIn PDF document text
    • http://dkblogin-de.com/v39nn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496216/normal_5fc95649083af.pdfIn PDF document text
    • http://gratoraama.space/classified_balance_sheet_from_adjusted_trial_balance4jtvn.pdfIn PDF document text
    • http://tacfitproducts.com/27983462296w8z6z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413567/normal_6002fa8425c00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_602aa651a52a1.pdfIn PDF document text
    • http://clubstore.pro/tabejomekz5039.pdfIn PDF document text
    • http://remontvorot24.com/gasoline_tank_truck_emergencies_guidelines_and_proceduresp7hb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426090/normal_5fe241e418b74.pdfIn PDF document text
    • http://shoop-fn.ru/77972803429a0tv8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403539/normal_5fc8767d7ffd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474722/normal_5fcb55792d75d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dazutun/vubiradakesosage.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/91099590318.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/37814271969.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_off0000d7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F1 5212 bytes
SHA-256: 3bda09e0976b65417e4483038fe47abab6aee0a06f7bfb033cd6fe54bb5a946e
font_01_sfnt_off0000e9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B7 11444 bytes
SHA-256: 69e9630c53ebed8c5a5eefbaac425e0b16dfd7c988f691a65a0c47c3d3744e70

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