Malicious PDF — malware analysis report

Static analysis result for SHA-256 620cc3c49feeed23…

MALICIOUS

PDF

65.4 KB Created: 2021-03-07 15:38:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7b48ef3b6adad4946b1f49c7223e5011 SHA-1: 388cc2e6cd4ddd1dd4af0341f5cbfe70dc1accdc SHA-256: 620cc3c49feeed2344c383dbafa5899d0e5585a7b69b0d92f18f95bc6a8e8569
126 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
  • 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://ponafet.ru/wix?keyword=the+language+of+science+prefixes+and+suffixes+answers PDF link annotation
    • https://sozejelef.weebly.com/uploads/1/3/4/6/134600180/ziputevebugoxezi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456996/normal_6001070f9d872.pdfIn PDF document text
    • https://zafojepomekosax.weebly.com/uploads/1/3/4/3/134352399/89e196cd7a3fd.pdfIn PDF document text
    • https://jagamasukibo.weebly.com/uploads/1/3/4/4/134493784/1483646.pdfIn PDF document text
    • https://gijojipile.weebly.com/uploads/1/3/1/3/131381352/vinivasa.pdfIn PDF document text
    • https://samunilita.weebly.com/uploads/1/3/4/7/134709343/lamotuduvasolasuxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497658/normal_5fcc008f80a52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463808/normal_602754a90d597.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529780/normal_5fd8ff155b21a.pdfIn PDF document text
    • https://volixezutepa.weebly.com/uploads/1/3/4/1/134131916/tawaliz.pdfIn PDF document text
    • https://soregoba.weebly.com/uploads/1/3/0/7/130739918/dfa0612.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/954f38e5-5a3f-4476-b80a-1c1149f161f0/tusabumonuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cb1022d-beeb-4d14-af70-12482a0e8eaf/41012835892.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/46554247491.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/94668163618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eb2742f-44e4-42e9-a31e-0fe685cbcb3a/15218437051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fd193a8-f4eb-47d2-9c75-6dfa6d813ec7/velowosobafubomudazebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5038a47a-2ec4-4f58-92bd-dae46fcb6402/definicin_de_estudio_de_mercado_segn_autores.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_off0000c2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2CE 5528 bytes
SHA-256: 97d8aa8c5882212f245130dba491e3068b1964bf4efb62a1001edd6bcc0446a7
font_01_sfnt_off0000d5b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B3 10248 bytes
SHA-256: 5c92a2ca7213dc786b4f8fbd1de9489d90ff8b346081ba4c52e4c9513236084e

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