Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba82a4361163c77…

MALICIOUS

PDF

41.3 KB Created: 2020-08-09 12:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3a8ca666e874121f330476f60d33387 SHA-1: a566bd4bfd0a1ebd5c2f102de13f8faf1c3ca0fe SHA-256: 7ba82a4361163c770a76cbd1f8b959234636ebb252b0cae82e5d8a1e3cfa7524
210 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with SEO spam and phishing lures. The document body and heuristics indicate a "download" lure, suggesting the intent is to trick users into downloading a malicious file. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=migration+certificate+form+pdf+download In PDF document text
    • http://genutem.teatimeboba.com/uploads/1/3/1/1/131164250/zemomadix.pdfIn PDF document text
    • http://files.runningadventures.uk/uploads/1/3/1/8/131871657/pukodasife-jisijufanivu-rojopuvu.pdfIn PDF document text
    • http://files.cantonbarbell.com/uploads/1/3/1/6/131606046/wuxusexetodi-zaromodex-bajomokusu.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/1/0437/9954/3970/files/gst_tax_rate_slab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/47500766906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/budozupizusirukorapig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/rakijekazebilepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/lonozaxuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2931/5239/files/13106944724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/fabofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1771/5361/files/57726992731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4511/7342/files/application_of_computer_in_nursing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/mastering_autocad_civil_3d_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/current_trends_in_reliability_availability_maintainability_and_safety.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8992/8099/files/94596184876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5111/3883/files/thank_you_letter_for_donation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/timex_iron_man_manual.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_off00006434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6434 5396 bytes
SHA-256: 4322b22f4a2e8f45202f7eb11f183629b6c8a1c93b59b63d6a95df55b4006897
font_01_sfnt_off00007698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7698 9728 bytes
SHA-256: c33b078c27c02d0f5949cae0430032a62fa08ca9814e2324ef2c0aa973c62dbf