Malicious PDF — malware analysis report

Static analysis result for SHA-256 8824b84219c8af5b…

MALICIOUS

PDF

39.9 KB Created: 2020-10-25 10:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 9df6293fe7246c529fe9ae3dc6c5605f SHA-1: fe1d46245f6ba6b5d9c54e858617b12652c168a1 SHA-256: 8824b84219c8af5b2866dacc03702a6b67343890b5bddbb379b7f2fc103dc1b9
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.link/aws?keyword=annexure+f+passport+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5f8b4ad080ee5.pdfIn PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/notufasek.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/6d24ae9db5ac9.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/4719945.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/poposapo-sevaka.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005d72.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005d72.bin)
    • https://uploads.strikinglycdn.com/files/3cffa683-8919-408a-b015-28e6cf056b91/wenifalebizurelapumedirul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb1c1e0-0c9c-42a6-991c-6a91f66810e4/luxatajisorowo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5895f437-01c5-4a04-b91b-552ce494d120/69259857438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/369e3928-e484-4383-a6a0-c76b2527c949/277831296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3177/9738/files/33267197398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/new_navy_sapr_instruction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6343/3120/files/75414845233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0007/2864/files/11327233042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4952/8727/files/8992253093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/66340732526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2655/2264/files/88644126871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0008/4126/files/sportline_stopwatch_228_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2623/6071/files/madezasula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7905/5000/files/adventure_zone_transcripts.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_off00005d72.bin)

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D72 5184 bytes
SHA-256: d20c9d8805a221247f5ea001da912e93960100f8fc567d4b521636fb5efc5f73
font_01_sfnt_off00006f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3E 10328 bytes
SHA-256: 085290d142fc2307b07577073a4add191b35cf70d2e9d4489049cfec48b49aa3

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