Malicious PDF — malware analysis report

Static analysis result for SHA-256 d175305b570b086c…

MALICIOUS

PDF

51.1 KB Created: 2020-11-03 14:29:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 1030623f109e193fc79fb42bf949b052 SHA-1: 93cc8b73366bffc2ceeb16a0537a4b75c4573a0e SHA-256: d175305b570b086cc21e70e00c934039a11f57d1e67b89d3e537fb8ec8d64462
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.me/123?keyword=cingular+flip+iv+battery In PDF document text
    • https://pesodubebugi.weebly.com/uploads/1/3/4/2/134234841/rufoxozon.pdfIn PDF document text
    • https://labivuzixifazer.weebly.com/uploads/1/3/4/3/134310915/510f377dde481.pdfIn PDF document text
    • https://nabisipiguges.weebly.com/uploads/1/3/4/4/134432296/sizugefumu.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/bevekizadoxuj/besagod.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/37388283935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e592e14c-0def-4179-88b8-b26e04db1527/tavavagukil.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/papivutoxozeku.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/80310410238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28a14485-32e9-40da-891f-1d10ae4161c9/23512092504.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/google_voice_with_magicjack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/386d12ee-f683-4d91-93d4-4b917bc36530/bozawog.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2A 5100 bytes
SHA-256: cf6e66fa8ef569534571b874335f8cfbbb01bad4e9b7887cbf32f244117a5c7e
font_01_sfnt_off00007fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA3 13552 bytes
SHA-256: 5745257de71928a29be2354a87bd3d901ff194987b079fb88846bea123bb2d0b
font_02_sfnt_off0000aa8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA8A 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67