Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8d5ec6e3693bd1…

MALICIOUS

PDF

45.4 KB Created: 2020-10-04 03:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 3e79190a1cd833be3e563c4759c1f851 SHA-1: 89a8cf612460fdcb92a83c566a0760ec35b376e4 SHA-256: aa8d5ec6e3693bd146430a6b270cd65a5352c8557c4e5302bc3c42dbb8591fd6
194 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.
  • 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.
  • 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=over+3.5+prediction In PDF document text
    • https://site-1040238.mozfiles.com/files/1040238/98169082152.pdfIn PDF document text
    • https://site-1041413.mozfiles.com/files/1041413/93226774170.pdfIn PDF document text
    • https://site-1041068.mozfiles.com/files/1041068/lilarezekiritazaximuvo.pdfIn PDF document text
    • https://site-1039002.mozfiles.com/files/1039002/5504831889.pdfIn PDF document text
    • https://site-1039268.mozfiles.com/files/1039268/71425579393.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/1/0483/4177/8585/files/vagoxobivajexiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/bloons_tower_defense_6_hacked_google_sites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/sivuzesito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7602/2179/files/pensamientos_cristianos_para_compartir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/lusizosokezix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/4353/3212/files/first_quarter_storm_tagalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2917/9811/files/90264207022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/wings_mod_minecraft_1.15.2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3848/4891/files/magic_coffee_direct_sales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6638/7363/files/lanibox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/286a2aa0-6543-43ce-a95f-230a304fa19d/tinosadevezifulitasigago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f9deb41-152b-4bcc-90d3-fad9d44fc35a/50486437955.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c4e003e-1624-4a35-ae5e-5fa6d3405bcd/rebevunafetoxizif.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_off00007517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7517 5056 bytes
SHA-256: 8382e6df86ef74320c093f021200bfab40df38ed10d759b2b1d4f1ecba7864b9
font_01_sfnt_off0000866b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866B 9928 bytes
SHA-256: 4c79e2bba476febb85c852e4fdb0805df9212d622493636a15e28e0dc7569ad1

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