Malicious PDF — malware analysis report

Static analysis result for SHA-256 478da3d6c8820175…

MALICIOUS

PDF

50.5 KB Created: 2020-10-02 23:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: dcace8b046d52d2f21f005b58f9413a2 SHA-1: 1faf3d565d2112a9f8d0c61218293765dee5bd86 SHA-256: 478da3d6c88201756a5ec41eb7581fee6e46ae4c3e121d5d8959c06c4be67585
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/strik?keyword=androeed.+ru+terraria+mod+apk In PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/58180327991.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/49657687387.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/96182629528.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/1/0482/0418/5752/files/openiv_mods_folder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1017/8717/files/rozugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/6969/0022/files/anna_and_samantha_martin_weight_loss_pill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/nadunonodax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9844/2401/files/julius_caesar_act_4_and_5_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2888/1318/files/great_stuff_big_gap_filler_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/jin_kazama_tattoo_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6139/3061/files/7860173842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/xisevatemonitawa.pdfIn PDF document text
    • https://www.financialexpress.com/opinion/uday-kotak-panel-report-is-more-disruptor-thIn 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_off00007b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B92 4864 bytes
SHA-256: 89b247808cf2f3f6c226adfec7be79b8d9b83bc2cff2690e58004e9fe1facddb
font_01_sfnt_off00008bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFC 10260 bytes
SHA-256: ef7cad113c263f6ee1082a2695dbc200b48de31504e566be2a9978efe759ed13
font_02_sfnt_off0000af09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF09 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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