Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e5fa462de2d97a0…

MALICIOUS

PDF

36.0 KB Created: 2020-10-25 00:08:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: bb0096f1e77ebcc030e3e2f462ac8a9a SHA-1: 63457c0fbd0fae83c7bd927ccc5f4285b1e28501 SHA-256: 6e5fa462de2d97a0de649d55b4dab918d026545a23acbd96915aaae936d43545
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://gettraff.ru/strik?keyword=pink+moon+tabs+tash+sultana In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_5f9237ff4b494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378834/normal_5f90e9c186fe2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f8a9ec3cb241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393916/normal_5f93898b058f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375704/normal_5f8dd367484c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5f8f9500b7079.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_5f9497358d8d1.pdfIn PDF document text
    • https://deriwofapavuz.weebly.com/uploads/1/3/4/3/134311795/9247976.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1161704.pdfIn PDF document text
    • https://lukozosa.weebly.com/uploads/1/3/4/4/134485969/benagapurimobaxixel.pdfIn PDF document text
    • https://fukobararusi.weebly.com/uploads/1/3/4/4/134404541/wijupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374984/normal_5f8f6e16b044f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404490/normal_5f931ce0acb2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f877f95b98bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405930/normal_5f93de20b660b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382789/normal_5f91517851bec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369343/normal_5f8f44d9d5088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402933/normal_5f920af1520bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388062/normal_5f933b1f2aa19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_5f8d33a8ee433.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/1/0476/5794/3206/files/tiefling_eye_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2006/6209/files/orion_starshoot_autoguider_pro_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5424/1694/files/21409011398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/63875751387.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_off0000511f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x511F 5032 bytes
SHA-256: 458cdaa30e825ffafb45063813ca9fce665376fb008a7516e01caafd49d23c89
font_01_sfnt_off00006219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6219 9808 bytes
SHA-256: e81615078f89a7979433b291206580153c3201a4999286cb804da72da62eda61

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