Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c8a3e84fb36530…

MALICIOUS

PDF

39.6 KB Created: 2020-10-12 01:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: abd3e16d3342ea0f1b8777aa3e029371 SHA-1: b479ba933416d27b53737cd3fcdbd3501ae6bc03 SHA-256: f0c8a3e84fb36530a890e9312cfe40c0ef964f05a7eb5c7b033b041fd5ac01c1
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://ggtraff.ru/pify?keyword=western+regional+all+state+orchestra+nc In PDF document text
    • http://mowadij.ftmobile.com/uploads/1/3/0/8/130814070/jigaxekowek_xapekager.pdfIn PDF document text
    • https://site-1038332.mozfiles.com/files/1038332/gesanawetu.pdfIn PDF document text
    • https://site-1041611.mozfiles.com/files/1041611/juxixum.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/1/0432/7053/7374/files/pete_rose_baseball_card_1986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7192/2591/files/what_does_unable_to_send_message_message_blocking_active_mean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4062/0711/files/general_ledger_quickbooks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3725/3023/files/rain_bird_esp-tm2_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4400/6819/files/9766894293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2427/5866/files/best_pill_cutter_for_oval_pills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9544/8988/files/34353343056.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_off00005c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2B 5072 bytes
SHA-256: 9d14a22c0848ac72977c28cacc80e0b2a5abfa6c3fd7c7d0119be4f874e3645d
font_01_sfnt_off00006d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6F 10676 bytes
SHA-256: 5958b4a7d1dc484c70e245ec69dfa5068e135605381bb6bfc919542682863bd4