Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0cda081de585af…

MALICIOUS

PDF

70.2 KB Created: 2021-02-11 15:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b1a523481177f118eaf2a440950edff1 SHA-1: a8e45f96953e4d7417064f1945f4f6ae405e2d1e SHA-256: fc0cda081de585af252ca86f97d60293e1ba4d231763cfedcb036725aef16323
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wb?keyword=chaita%20program%20video PDF link annotation
    • https://cdn.sqhk.co/datolabevev/mRhggfK/kaganovedevijewuvowex.pdfIn PDF document text
    • https://zikepasut.weebly.com/uploads/1/3/4/1/134108801/1234299b77.pdfIn PDF document text
    • https://dezijetide.weebly.com/uploads/1/3/4/8/134864221/5351116.pdfIn PDF document text
    • https://suwisabinupa.weebly.com/uploads/1/3/5/3/135351097/wamebi.pdfIn PDF document text
    • https://cdn.sqhk.co/pisapaxosabo/fzzihEm/gugijudarofuropomax.pdfIn PDF document text
    • https://wixevilit.weebly.com/uploads/1/3/4/8/134873569/5429edb1e83c78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384483/normal_601495e990655.pdfIn PDF document text
    • https://cdn.sqhk.co/lebudawojafi/fjajahb/christmas_mandala_coloring_pages_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425921/normal_5fea27931e076.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427783/normal_5fce68feefae9.pdfIn PDF document text
    • https://xonugovelixef.weebly.com/uploads/1/3/0/7/130739086/folamufutalure-zakesutexafewal-vojudalopugoko.pdfIn PDF document text
    • https://muxazufi.weebly.com/uploads/1/3/2/6/132683336/e9d4cf349c21.pdfIn PDF document text
    • https://kazowotamije.weebly.com/uploads/1/3/4/0/134012594/eede46f9b58.pdfIn PDF document text
    • https://xorizelipuv.weebly.com/uploads/1/3/1/6/131637744/bibedutixenaga_vukulofega.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zalaxorenisev.epizy.com/attnang-_puchheim_bahnhof_platform_5c-_e.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_off0000d62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62C 5128 bytes
SHA-256: 8b0ccecd521d87e39ec018aaa02b2207a124509c56d5b44b4f9ddfb0646a1a49
font_01_sfnt_off0000e778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE778 10732 bytes
SHA-256: 122f8384e66f3a356ed1655ff3a1a11664c5ef7eb31706e1d2c46be5eb97830a