Malicious PDF — malware analysis report

Static analysis result for SHA-256 73b4ad5275f6d2f1…

MALICIOUS

PDF

42.1 KB Created: 2020-10-30 12:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: a48b9f199c14aa0b6325516d65111a21 SHA-1: 40e3fc53fd5dccfff9bcb2dc13954036e90b49e0 SHA-256: 73b4ad5275f6d2f13b73077b5fce5c30f80583122a192e661a178320b2f1496c
174 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.
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=jefferson+parish+water+department+emergency+number In PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/3253553.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/70fdf8.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/1/0435/2960/1178/files/zikejuvilifabazaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/9786909341.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/varilogitofiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5317/8791/files/25727060437.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/vowozuxope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1279/1731/files/niveles_de_glucemia.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/far_cry_5_peaches_glitch.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/business_intelligence_and_analytics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2037/6984/files/zikufelovelovilezazuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/0852/1902/files/43239524904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4825/8714/files/mapimim.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/rubik_s_cube_cfop.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/bengali_calendar_1423.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_off00006108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6108 5860 bytes
SHA-256: d288add11fca73cb687315d624c90e761867d3a7e492260ba61e2b1e028b8384
font_01_sfnt_off000074e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E7 11276 bytes
SHA-256: d2a49c7fab152cec8c2ba4701a204dfc423d0c8f775f5ff3fb4d6a96ad89ff83