Malicious PDF — malware analysis report

Static analysis result for SHA-256 7161e67007aee587…

MALICIOUS

PDF

67.2 KB Created: 2021-03-03 23:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ecf5be3f0d83ec33e4828b923e1f7190 SHA-1: 3f438c9cddac8b8401ccc752303c8d576a83b5b7 SHA-256: 7161e67007aee5877d86d0f5d7ab5f4d559839bc2730823c24ccd52d05a2e43d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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.
  • 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://dafemum.ru/wix?keyword=boricua+en+la+luna+lyrics In PDF document text
    • https://cdn-cms.f-static.net/uploads/4453329/normal_6016ec1f6b3a9.pdfIn PDF document text
    • https://vimudizod.weebly.com/uploads/1/3/4/6/134632239/luveladebi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373527/normal_5fdaedf1251a9.pdfIn PDF document text
    • https://rojanudase.weebly.com/uploads/1/3/0/9/130969060/xuxerugaj_wimudaruxif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423452/normal_5fcf2e7979e60.pdfIn PDF document text
    • http://faripofijukevom.mywebcommunity.org/worefugodobususazejaje.pdfIn PDF document text
    • https://zunejafeg.weebly.com/uploads/1/3/4/3/134382709/5ee411d3892.pdfIn PDF document text
    • http://jebumivusesujan.iblogger.org/11126606777.pdfIn PDF document text
    • https://jatakusikafe.weebly.com/uploads/1/3/0/7/130776866/8925315.pdfIn PDF document text
    • https://nefupoxuwuridek.weebly.com/uploads/1/3/4/7/134747690/wixobovise-vebumakawuxa-fewoloseletuw.pdfIn PDF document text
    • https://sesoguxanijiba.weebly.com/uploads/1/3/5/3/135309487/1811480.pdfIn PDF document text
    • https://liwifaxuje.weebly.com/uploads/1/3/0/8/130874244/lomiminolud.pdfIn PDF document text
    • https://butadopol.weebly.com/uploads/1/3/1/3/131378795/refedikujiji_kubelonesolud_taletugunef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379973/normal_602fab2edee4a.pdfIn PDF document text
    • https://menafemudiwifog.weebly.com/uploads/1/3/0/8/130813668/poposozeledi.pdfIn PDF document text
    • https://pegujerexiwusi.weebly.com/uploads/1/3/0/8/130814209/wuzoloke_jemopajojis_xilakepulefafov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://moraruvotu.epizy.com/along_the_way_app_android.pdfIn PDF document text
    • http://nakarajibap.myartsonline.com/thus_spoke_zarathustra_meaning_in_urdu.pdfIn PDF document text
    • http://difoduniba.epizy.com/36375507268.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_off0000cd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD99 4944 bytes
SHA-256: 2ae80c3fb4d9662be50778e38765b0e7bc9f81024a86760ec8d3653515d289a4
font_01_sfnt_off0000de80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE80 10284 bytes
SHA-256: 1bdcf6b6d1b893812e11e57fe5c77c74143c19b88229712ac900f797edd9779f