Malicious PDF — malware analysis report

Static analysis result for SHA-256 a418d201ea48feee…

MALICIOUS

PDF

51.0 KB Created: 2020-10-03 21:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: fd1d44db420a28b69e5a25ac8abe3599 SHA-1: 7b3bad58ccad477a719dcbf92aa4eca0d6650a04 SHA-256: a418d201ea48feee575ae420f6d04e6a05892e3fb36fe3f623d7f00342cf8acf
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/pify?keyword=uc+decision+release+dates+2019 In PDF document text
    • https://site-1040516.mozfiles.com/files/1040516/gazoduvogepix.pdfIn PDF document text
    • https://site-1040327.mozfiles.com/files/1040327/zabobuwuwu.pdfIn PDF document text
    • https://site-1039214.mozfiles.com/files/1039214/6936981197.pdfIn PDF document text
    • https://site-1036884.mozfiles.com/files/1036884/lukigirumekizugomupadet.pdfIn PDF document text
    • https://site-1036921.mozfiles.com/files/1036921/vifokuxafupiwapasazi.pdfIn PDF document text
    • http://dirojar.mabsociety.com/uploads/1/3/0/8/130874019/liwezojodejuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/hyosung_atm_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/tevajubefogew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9595/5358/files/musica_de_los_90.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8667/8683/files/95909887325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7128/6679/files/naruto_tailed_beast_mode_chunin_exams_fanfiction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5217/8849/files/85209587501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6757/files/tatisugifedigupojumiginuw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDA 5196 bytes
SHA-256: 44a2429aef7d60fec4e7cdad5cd3fb2213b187e325455ad6670b9c8d2774f432
font_01_sfnt_off00008e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E7D 10116 bytes
SHA-256: ab472215e4f4c26138fe0db8c586aecc619794e81a7ee9b87f77b828502d4303
font_02_sfnt_off0000b11c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB11C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34