Malicious PDF — malware analysis report

Static analysis result for SHA-256 622467dc9c164fa9…

MALICIOUS

PDF

48.3 KB Created: 2020-11-01 16:25:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: eeb3167b0c3d8404f9346be3d5bea611 SHA-1: bedd4a617fb20559d13de4bf81b4de40081e35e1 SHA-256: 622467dc9c164fa950bc117ad70b1f6d3a7b5841535d71a0afb992bbaa133648
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=cree+t6+vs+xm+l2 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373986/normal_5f8a301290e05.pdfIn PDF document text
    • https://jatasurow.weebly.com/uploads/1/3/4/3/134358583/vudanosokewodaxemi.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/7797861.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/1/0432/2574/3521/files/biwumudutidug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4050/6009/files/99078737268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5959/1321/files/5076526317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6091/9462/files/one_of_the_best_lrs_in_dokkan_global.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/5224/7461/files/conjunction_and_interjection_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4356/7771/files/46187171733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9175/7737/files/77654850208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4583/8248/files/list_of_helping_verbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4647/7722/files/83128310344.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8548f375-289a-426c-9e28-9350aabe7df3/jawarogiribo.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_off00007dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBA 4940 bytes
SHA-256: a6a7611d8d2617e3b6ce4edbde7e66d3d4485ca6df0424ee731cc9e611742019
font_01_sfnt_off00008e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E79 11264 bytes
SHA-256: de3b6507011ccbc3608e6e87b33df3f8bdc3f8c1b7da404ef20013a45ceee99d