Malicious PDF — malware analysis report

Static analysis result for SHA-256 695e5264f28627a6…

MALICIOUS

PDF

44.4 KB Created: 2020-11-05 07:34:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 679bebe8947a6bf7ebb51838025c68b6 SHA-1: 422c8d35a17ec7ef8166c0dfdef1cd4282b39ffc SHA-256: 695e5264f28627a6e0777578ff52d67b7b161ee97275add682b9cf2dd949b285
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=gary+rossington+les+paul In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386839/normal_5f90d895ee8be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5fa2693f77e37.pdfIn PDF document text
    • https://jenevokitajawol.weebly.com/uploads/1/3/4/2/134235402/ad9348ad.pdfIn PDF document text
    • https://misutinulil.weebly.com/uploads/1/3/1/4/131407711/modoxuduro_gubixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411923/normal_5f963f85eb7dd.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/fikuvine/89801827683.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/bajusokosixabimemon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0584157e-6762-40ae-b2cd-0eb2081d8e08/52447460921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39aa87fa-28f1-44f7-abfc-0d94fccfc110/sirutimir.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/barbara_lynn_if_you_should_lose_me_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af9e50e2-ec0a-4fb1-920f-189c907e8a7b/kexivixolela.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/green_school_bali_indonesia_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/32930070455.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_off00006f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4C 5120 bytes
SHA-256: 9449a1308aee3dd250b9ad4fe87b0cd47a120df49eb7eb3111cfab18f0b21b79
font_01_sfnt_off000080d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D6 10648 bytes
SHA-256: 33f3211f0e791559ebf3e61a245d72103217037dafe5f0213195eb2228ef9993