Malicious PDF — malware analysis report

Static analysis result for SHA-256 947adc69baa9471a…

MALICIOUS

PDF

43.7 KB Created: 2020-10-28 17:10:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 02882a9654da6d97d20f0f86b83f4961 SHA-1: 79875179864a24e511d0da54d11603f8682ea468 SHA-256: 947adc69baa9471ad1ee641ee78ece23e72396daf93c4c4e1f23b2cfa83211f6
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=clear+blue+insurance+company+clearwater+fl In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377928/normal_5f9841c9f0bd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380522/normal_5f8b1fc39e020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420743/normal_5f9878d2f33c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404755/normal_5f994dbb60cd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f870b18d7fa2.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006ac2.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006ac2.bin)
    • https://s3.amazonaws.com/kudefem/rejumejosovabidu.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/panewunedesivabobex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/669ee6e2-0b82-4218-b279-31fb44cd3afc/94299072768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85afbc4b-79b5-4132-8e5e-9b3fe8c2f39c/12384119686.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/zedabipifeno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93c3fd2c-ddec-4fac-9bea-e2abb84ecd34/49674198407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6033/3206/files/40423702502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d92fbcd5-88b2-4416-a6ba-aa4dd1ed796b/bebilesexuxurubojasuporu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0660/5987/files/fahrenheit_451_conflicts_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4883/2671/files/vr_emulator_pc_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/brazing_vs_welding.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/business_plan_structure.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/jonij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38f07cf7-8aeb-4fa5-a1eb-faba94ed23e6/66245224306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4622/7105/files/futalulapufema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1527/2605/files/26419160774.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/jonudupanutaloninejulema.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_off00006ac2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC2 5400 bytes
SHA-256: 02f9c5c969ee09de50f4e2fb3df658c78e5a8006866aed9a05e4b2b1ec92200e
font_01_sfnt_off00007d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1D 10640 bytes
SHA-256: 22db7580b94c4edce54f5434110967858967cfad80e17b711699644f7d567caf