Malicious PDF — malware analysis report

Static analysis result for SHA-256 207e7b9db0a4b9c8…

MALICIOUS

PDF

51.2 KB Created: 2020-10-26 09:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 249a4d2de9a8d500c3326169904be8b0 SHA-1: 25b5000156eb4b40c87e66db3d94410e33ff4085 SHA-256: 207e7b9db0a4b9c8ce2d417f07e3a98adcf1de36e0a2e900c1e8ed729fccc4ce
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/123?keyword=manual+usuario+chevrolet+captiva+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f8aae055061b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371790/normal_5f8f93192ff60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5f903d59c2e18.pdfIn PDF document text
    • https://pexulowiseguwuz.weebly.com/uploads/1/3/4/3/134391342/729213.pdfIn PDF document text
    • https://digulowewuw.weebly.com/uploads/1/3/4/3/134363346/9316955.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/mimupelowoz.pdfIn PDF document text
    • https://xigolomo.weebly.com/uploads/1/3/4/4/134483438/nurizidekajewim.pdfIn PDF document text
    • https://lujisitezolip.weebly.com/uploads/1/3/4/1/134109273/1934861.pdfIn PDF document text
    • https://nometiru.weebly.com/uploads/1/3/4/3/134379396/7500163.pdfIn PDF document text
    • https://sakifawabepufa.weebly.com/uploads/1/3/4/4/134466371/3bac1a.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006fe4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006fe4.bin)
    • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000b103.bin)
    • https://cdn.shopify.com/s/files/1/0483/8309/9031/files/nikon_d7100_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0082/2934/files/samsung_dex_s8_android_pie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8982/8771/files/25868019847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/29186642616.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/bsnl_prepaid_recharge_plans_in_maharashtra.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/3651857229.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/jain_bhaktamar_stotra_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/88088020183.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/87078595411.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_off00006fe4.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE4 5240 bytes
SHA-256: 8665e9503caaf5ad2a500265a6c3bbb25e01ae6145a4f7b1d444da09c52729a5
font_01_sfnt_off000081a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A9 1944 bytes
SHA-256: df95e079a26d38a5e36065ac3a1faf906c10b473173d1e46ed244158e6db8dab
font_02_sfnt_off00008af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF4 11412 bytes
SHA-256: 8006f3690c26fcac3577b1f0b3a5e67977d343524b5a96a70fe9bcdcd8f06bb1
font_03_sfnt_off0000b103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB103 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3