Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c331e81fca41df5…

MALICIOUS

PDF

73.3 KB Created: 2021-03-02 16:13:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 405c2518e98891a8d111f675c229afb6 SHA-1: 1e75b4f63c3c3143f8faf81771731aad215b2a17 SHA-256: 5c331e81fca41df5aa8fa4ac370eb55dd95ba21fc3c62ce5d65bb4c02452ebf0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=winter+jam+2020+bands PDF link annotation
    • http://yesitalia.fun/guselumusenorufiwit75c4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_60342203a56e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455396/normal_602ed8459be5c.pdfIn PDF document text
    • https://poxosuliw.weebly.com/uploads/1/3/1/3/131383655/telajom_vinejapox_leduxomago_wosafemoxekapuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381287/normal_60047f9e610cb.pdfIn PDF document text
    • https://tirevenisigagum.weebly.com/uploads/1/3/4/5/134500803/7005894.pdfIn PDF document text
    • http://sudilufib.getenjoyment.net/zavodib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408174/normal_5fda46d51e674.pdfIn PDF document text
    • http://alisabor.design/finite_and_nonfinite_verbs_worksheets_grade_6kvxbm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451365/normal_6023129cc2701.pdfIn PDF document text
    • http://vumajufeboxidik.mywebcommunity.org/89403949573.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374009/normal_5ff3e671ed3e8.pdfIn PDF document text
    • http://nekevofitoruzat.22web.org/difumalobabus.pdfIn PDF document text
    • https://sazezikamujut.weebly.com/uploads/1/3/1/4/131438312/dazevukewazoxaz_roxabo_soravoxoganorub.pdfIn PDF document text
    • https://fulimutalez.weebly.com/uploads/1/3/4/5/134599943/4637706.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tipipigi.atwebpages.com/how_to_read_a_standard_reduction_potential_table.pdfIn PDF document text
    • http://zitasixan.atwebpages.com/traxxas_summit_1_16_aluminum_upgrades.pdfIn PDF document text
    • http://jowawaba.atwebpages.com/jbl_lsr305_dimensions.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_off0000e10e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10E 5440 bytes
SHA-256: 70b21a56f55fd6da04bfbeee5ac0891e4cddfa4ac5090b2f86ab6286f7c6fbe5
font_01_sfnt_off0000f380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF380 10876 bytes
SHA-256: c9f74c48471dd64e914f0fe373cb0cd871cc1e1729e6e5be97b9cb9026b7a4a1