Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e95688a1016a283…

MALICIOUS

PDF

75.4 KB Created: 2021-02-17 15:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 271319fc9b56fb6f25d3ebe7b5162cc7 SHA-1: e4479cbf722586098e584cc05a87affba43d1964 SHA-256: 7e95688a1016a2830744fe02807a449524e3d15f923e931321e24f7c566011e4
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.
  • 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://bologen.ru/123?utm_term=how+to+calculate+the+number+of+moles+of+a+compound PDF link annotation
    • http://idealicaufficiale.website/amazon_echo_dot_appsmogv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412379/normal_60023739ce92f.pdfIn PDF document text
    • http://goldstein.capital/oriental_adventures_3.5kx2ae.pdfIn PDF document text
    • https://mopokelam.weebly.com/uploads/1/3/5/3/135349304/josufofenasebo_xevevetivu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419827/normal_5fe9482973d6f.pdfIn PDF document text
    • http://wersita.space/66744526901x9uip.pdfIn PDF document text
    • http://blog-millionaire.buzz/housing_allowance_claim_form989qz.pdfIn PDF document text
    • http://agentsoft.space/75739520151yj2vf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419001/normal_600940e353dd3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kovezux/45208698162.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/mixed_number_fractions_worksheets_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/languideciendo_significado_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/30075961241.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/ae_form_55-_1.pdfIn PDF document text
    • http://zevizajezu.epizy.com/google_sheets_merge.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_off0000e686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE686 5588 bytes
SHA-256: 0150b35f8033736c00e8d7c9e489a007143ddde836b3aca89b05a4658a6a3db5
font_01_sfnt_off0000f960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF960 10848 bytes
SHA-256: 7c7b3ce93b998204d0810c2dcda180cae40248b1b467f1effb6d628f0df26192