Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff019008e7a00e0…

MALICIOUS

PDF

41.7 KB Created: 2020-10-28 11:00:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: e05267983ce0d2c6429e3887cb3b80d7 SHA-1: 9367ccc2e67620f5f3bd2c646e52c9e4c4789dd4 SHA-256: 3ff019008e7a00e0a9f906964797d9393c705e760d4aed4048c20a4fca257962
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=stainless+steel+stovetop+espresso+maker+made+in+italy In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f8729fc73d37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368955/normal_5f8c95c05351f.pdfIn PDF document text
    • https://pijezokonogoxa.weebly.com/uploads/1/3/4/3/134308979/wuzutuxufogote.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/be1c3dcd071e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d032707-9dc7-4057-acbc-fe1657d1b9e3/vitifazixexevekulele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70f0624f-687c-47e3-ac74-95e5161ba6aa/pazuxetudirilejurirobewed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/476fe6f1-8886-4b07-9ea2-e4b54810f980/58372261093.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/24791939829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3920/7836/files/1_billion_digits_of_pi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1314/7293/files/gegadorupovomor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1825/6035/files/lataxib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8036/7780/files/zuwixize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/10674280792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1119/4010/files/vimixira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4231/6703/files/31093719562.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_off000062c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C4 5436 bytes
SHA-256: 1a74baaca2b06cbf69d1d68377b142c473f56156619e232e1cb22ba1a4403b0f
font_01_sfnt_off0000752e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 10664 bytes
SHA-256: 59601f8f6f84cdcc717d02c8f4bbc6edbf2e12e20351a84cfd8ac4d84766094c

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