Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a0974d79bf5d0b…

MALICIOUS

PDF

43.7 KB Created: 2020-10-07 20:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2573c8eb1a42f8662b501b80efc42f3e SHA-1: 8028691d7222e7f7d860760624f187ebc3fde5f3 SHA-256: 80a0974d79bf5d0b27706e6efeb859ca1ad5c8ad4f3e1fc32e97aea193750f69
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.club/pify?keyword=10+more+bullets+unblocked+games+66 In PDF document text
    • http://files.teamempoweringtogether.com/uploads/1/3/2/3/132303229/3712170.pdfIn PDF document text
    • https://site-1043794.mozfiles.com/files/1043794/13809029337.pdfIn PDF document text
    • https://site-1043689.mozfiles.com/files/1043689/43919308527.pdfIn PDF document text
    • https://site-1043286.mozfiles.com/files/1043286/49750376619.pdfIn PDF document text
    • http://xagibiwe.ssimovement.org/uploads/1/3/2/6/132681824/92fbaf44b.pdfIn PDF document text
    • http://files.strawberryflats.com/uploads/1/3/1/1/131164558/fujuv.pdfIn PDF document text
    • http://kesujowan.cchymancompany.com/uploads/1/3/0/9/130969177/50d192f697.pdfIn PDF document text
    • http://seboxe.myfieldsdatabase.com/uploads/1/3/1/0/131070227/2187604.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/1/0434/3149/3784/files/tales_of_xillia_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0708/6239/files/spielberger_law_group_tampa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3942/0316/files/48768218185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6146/9596/files/fold_down_desk_hardware.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_off00006b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B46 5716 bytes
SHA-256: 3e07c4e312b7a576c4034b90d1db5aead1d69fb420c343ce4302018314ff688d
font_01_sfnt_off00007e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9F 10576 bytes
SHA-256: 401f2dc7eec5711f7b3755d08adfe154c9b64e005c9bb84e55bea018372df4a2