Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f740c0f6c9ce5f…

MALICIOUS

PDF

69.9 KB Created: 2021-02-26 20:14:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ecfbf345f6752e9070386d065bc3bf89 SHA-1: d0d908d65ade059c6fb816011ef801326457ebf5 SHA-256: b2f740c0f6c9ce5fb0ef10d2cedbe370c26b58d7684e733db59c580364449a55
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://golowaki.ru/award?keyword=why+is+there+no+sound+in+adobe+premiere PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460706/normal_5fcd42a13c38a.pdfIn PDF document text
    • https://cdn.sqhk.co/mejabutumu/xhgnieO/vurigo.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/hhf27rn/loxukefuvifimomobuw.pdfIn PDF document text
    • http://myfirstsite.xyz/89227934776jdh1t.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/basutisigafofob.pdfIn PDF document text
    • https://xobiduri.weebly.com/uploads/1/3/1/4/131437628/7695e343da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418579/normal_5fe07bf39fdeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zokazeza.rf.gd/38973147324.pdfIn PDF document text
    • http://dasutako.rf.gd/fexiburo.pdfIn PDF document text
    • http://kuxixatizoxop.epizy.com/preliminary_drudgery_crossword_answer.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_off0000d5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D9 5420 bytes
SHA-256: 37e8eb185ac281e95b9c7cf07ee101e3d1613da3216e74767b36eaf3bd05a447
font_01_sfnt_off0000e828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE828 10196 bytes
SHA-256: f8bcc7cfb9381a2c8adb8da38cdfa626b53a9af39a0fd9ef50f9b826a1fe7e9f

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