Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3c4ed9d53cdb09…

MALICIOUS

PDF

60.6 KB Created: 2020-10-31 00:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0eb1bae7de45675c098d9de51462bdc6 SHA-1: 903f88084fcab60e39a98e20ead96e58da25dab9 SHA-256: ee3c4ed9d53cdb09a74704cba4c0aa50d587ec2be1fd299b71dcb38dd57cd0e7
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://cctraff.ru/aws?keyword=christine+marie+cabanos+danganronpa In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369776/normal_5f94e68c43948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5f9c932f2bbdd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4622/7096/files/kozilisigim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b6df577-3883-4b72-afe4-23591f3433a6/23695250649.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52a9e9d9-70bf-41b1-b3ff-4fb89bb71a0f/bob_books_collection.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/tareramowebine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/744d62cf-3760-4966-a0e7-10d2ae34ad1a/75915324953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8552/7743/files/devoxopafuvafusinomip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efde1dcb-51af-41f4-87a0-ecf2ae5a8275/83987934388.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/72147682111.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be351dda-6e65-4fc0-b0ac-7c763efb5bff/97127356891.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8575 5500 bytes
SHA-256: ac0739ea59f31a80ca1222e720406e5335d5a90f31aba971830e449d6120c13e
font_01_sfnt_off000097e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97E2 3144 bytes
SHA-256: 768b0bc189b395ebcfa9c1ec838fc4e1137fd64443ebc1a69f174de21ec75ae4
font_02_sfnt_off0000a4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4D3 12152 bytes
SHA-256: d846798d44e15e15dea8390179b24c6a1c1d4bf2a414aba0f78262f7148b2c30
font_03_sfnt_off0000ce0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0B 16552 bytes
SHA-256: 12f301204c9202327d2fc9a762689f72960481f03e27876bcc0868764af639cf

Open this report in the interactive analyzer, or submit your own file for analysis.