Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ab59f1c9a7434e…

MALICIOUS

PDF

71.8 KB Created: 2021-02-13 07:44:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b081285217d45772075dd0a924ba7f9d SHA-1: f99ad8e0c6cb355e59259e9c6fc46f826763d69e SHA-256: c7ab59f1c9a7434e1cf6817a44adf55202134ad4101c5566258722571b9b4028
296 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/tizafaxe.pdf.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Fake encrypted/secure-document view lure high SE_ENCRYPTED_DOC_LURE
    Document claims to be an encrypted or protected file that must be opened through a 'secure view' link, and the action link uses deceptive infrastructure. This is the secure-document credential-phishing carrier: the page imitates a secure-mail / document-cloud gate while the link leads to a harvesting site. action link to abused redirector.
  • 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://seumenha.ru/wix?keyword=one+piece+treasure+cruise+cheat+codes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387241/normal_6011841d956df.pdfIn PDF document text
    • https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/tizafaxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_5fe744c315e65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385614/normal_5fe07540a5e27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421360/normal_60068d936ae76.pdfIn PDF document text
    • http://midorezif.iblogger.org/46722040866.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366031/normal_6000b7c88c6cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446930/normal_5ff2fecade62e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467003/normal_601a3be9e9235.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383794/normal_5ffc163688050.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414691/normal_5fd17fab375fe.pdfIn PDF document text
    • https://bidiruvinevuf.weebly.com/uploads/1/3/1/3/131379477/44737f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dixuzudes.epizy.com/template_instructions_to_counsel.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/17876544917.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_off0000de37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE37 5156 bytes
SHA-256: e0f7e2a223ce764736281f8edf1b8f49622742c06046424eb8166a0d2bd14d44
font_01_sfnt_off0000efaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAF 10084 bytes
SHA-256: f7bffbd6316e0ca5ffd90a721f4df2204adeab0b6c50192e8869feca7ac1dafa