Malicious PDF — malware analysis report

Static analysis result for SHA-256 120caa1e25347a6f…

MALICIOUS

PDF

45.8 KB Created: 2020-09-09 15:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dcf9ca4bcdbc5c1186abc60104985902 SHA-1: 2b0a60bf8936350a5741d54afac5913faf48d3bf SHA-256: 120caa1e25347a6fbbc419451940e1c773f7a0c18976e2aa3b679471fbd83bc5
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.cc/wix?keyword=komodo+dragon+fact+sheet In PDF document text
    • http://mapove.hibiscushealing.com/uploads/1/3/0/7/130776485/6a67586c5d6cc.pdfIn PDF document text
    • http://runero.becausefocusmatters.com/uploads/1/3/0/8/130873843/poxofonetomir_rorejoliwuvuvo_kogimevi.pdfIn PDF document text
    • http://bisadit.glitterbarnchicks.com/uploads/1/3/0/8/130813330/1dd1076b580d.pdfIn PDF document text
    • http://botosel.discoverfloridachannel.com/uploads/1/3/1/4/131452842/jogulirib_dawokonufuwixu_lepowixavogixo_jidimef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/dba42a_5914d3d5f101494b8c2eda7ac9bd042d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1a37ec38b1a34ec982127b418537f6c9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6e3131_a8e813c9529a41baa06627b3411e0427.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/10e3af_0d0eb7f7845a45b88d4cd8fef4f2df3e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/77d535_8cbf90f3d6bf428d887cd073da5dff2f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/23e9be_ce204249a3e54739aebb0d5e8598ccd8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d2cc1f_762dcefa463c40f2a5a2034b457ad4d8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b0b521_5d2faa8b7c9044f8b54127b2c85e4db1.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_off000072a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A0 5372 bytes
SHA-256: 01cb9f8206821c093c862b8f5fe0bcc36cc9e1d3ad0afc0f9cc8db2f728f4b83
font_01_sfnt_off000084c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C5 10692 bytes
SHA-256: 3eb496efb4153d4c2c928c46d53c5f96d6202c5369dda098d5114d87fe37d853