Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c569252ffcef2c…

MALICIOUS

PDF

37.3 KB Created: 2020-10-30 21:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0ac9712fd1c264d0493397c829d26809 SHA-1: f590ce1558449e55dced52bf03a8c931b242a8cf SHA-256: 97c569252ffcef2c4e5b3e0a9c62e92b7c55f5c8c71c4aa1276894ec142ee72a
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=123movies+apk+download+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f8b765e4326e.pdfIn PDF document text
    • https://siwikuzovusodig.weebly.com/uploads/1/3/4/3/134357046/fuwexi-lalifokuz-jumigomidu-gikudejifin.pdfIn PDF document text
    • https://lerelapukuvi.weebly.com/uploads/1/3/0/7/130740054/1490928.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_5f8e327ecb2f9.pdfIn PDF document text
    • https://velizixevapejaj.weebly.com/uploads/1/3/4/3/134376636/padideviliz.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/1/0503/5776/4253/files/61371743507.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/82552285480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8624/7602/files/49870292796.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/bagepavotarezamediko.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/map_of_hollywood_fl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/daedalus_and_icarus_english_10.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_off000050ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50EF 5656 bytes
SHA-256: bdfb39d84adfb3ee2c06e89c322e1f0d47ebee11a06a1390d64fe157428d912f
font_01_sfnt_off00006438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6438 10664 bytes
SHA-256: 613473d042775cc25e251c62b2639bdead0a315246b2e87aadd27e663c3c9565