Malicious PDF — malware analysis report

Static analysis result for SHA-256 66d608b2419c8058…

MALICIOUS

PDF

46.0 KB Created: 2020-09-30 07:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: aed3ad568e5cf370749eeb5dd9141cf3 SHA-1: 2dd581f82bea68aba75afaf392ca70a9a15ceb0d SHA-256: 66d608b2419c80583cb5e0d604242b53d79894b3173a7102c7351ed34d759297
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/strik?keyword=bennett+movement+pdf In PDF document text
    • http://xakide.simpsonchorus.com/uploads/1/3/2/6/132696067/2978f697de79.pdfIn PDF document text
    • http://files.premierebasketball.com/uploads/1/3/0/7/130775658/e64deae95b2b.pdfIn PDF document text
    • http://bewuruj.staceydrago.com/uploads/1/3/0/9/130969465/runinaxenerefirofoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/064d4a2a-c9c9-4c86-9e2d-7729004d316a/ponujekubavenotafewogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f54f6bd-b3ec-46c0-b606-445204df93ec/56177255067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a966121-62c0-4c9a-a407-89dea6ae6467/fimef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052c3ba8-185a-4808-8de1-b24f5f11333c/73107637893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6535ee19-2bbe-4a79-8bdd-fd6c3be5e9dd/45873554083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/91491546109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6416/3490/files/93575605663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0944/files/rafurege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/compress_file_size_online_reduce.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/dhuso_baje_re_rajasthani_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02f4abea-20ad-43b3-9838-72b44b4bd91e/56705613655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c46fbd47-0bd8-4311-82a3-78280d2516ca/zinazenef.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_off00007817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7817 4780 bytes
SHA-256: 14e9ded60a3da49a093bc417f99420118d0a38db1fa5499215c25cc09aa9bb78
font_01_sfnt_off0000885c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885C 10480 bytes
SHA-256: 59dcf9ad961a5ba6551e367a5f64fe92d5307c47e5449fbc07e4193452490bfa