Malicious PDF — malware analysis report

Static analysis result for SHA-256 365dcb26d7c98dd5…

MALICIOUS

PDF

65.2 KB Created: 2020-10-26 04:34:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d193dec7c55d6394a69a09a615774a2c SHA-1: a06385c6b5910c03c0347ea77aa66d25474c1091 SHA-256: 365dcb26d7c98dd5f3d886b933f3ce6230a5ff36dc65409117d39aebf592a6a5
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/pify?keyword=dragon+age+inquisition+trophies+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f870e091e5fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379053/normal_5f8fd78807426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405443/normal_5f96321dd9d16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f887f060cd1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371240/normal_5f889bcb9b52d.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/sigad_kudogerulari_gotowelaner.pdfIn PDF document text
    • https://pefuxagofir.weebly.com/uploads/1/3/4/3/134359429/nonuvezamosuj_xedegefakozusos_wovivib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370533/normal_5f8fe9df08d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5f8bdb561da48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5f9439fca55fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5f8d8c34a3b10.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c04e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c04e.bin)
    • https://cdn.shopify.com/s/files/1/0484/2445/2254/files/tabunonitipipatoresevupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1487/2998/files/22405685551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c82c5479-a7ee-4ddb-993a-0d8e6ec4363a/jimitebowowulabam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b81b229-a101-44a8-9808-e423acb7a375/vosagabunedemulozajusiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/226a04ab-5f07-4649-9a6a-3576a39dd813/59458105052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddb08fa2-9777-40de-8b7e-586baa3f89b4/51644361172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/9849/8981/files/edmund_spenser_poems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9135/4534/files/samsung_tv_remote_pro_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/7896/5166/files/critical_care_medicine_marini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/47682700731.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 extracted file (font_00_sfnt_off0000c04e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC04E 5316 bytes
SHA-256: 6c8f35d2f9852e9c9effec252a7e47fe9857c614befe44bacb3c40afff548e24
font_01_sfnt_off0000d24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24D 10888 bytes
SHA-256: 4033c95492315caa7ffc191554e5b03755cc65a5b153a27b99d788afc6a92f91