Malicious PDF — malware analysis report

Static analysis result for SHA-256 b40c510f73063313…

MALICIOUS

PDF

39.2 KB Created: 2020-08-15 05:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6ee31e061794d0ef0ef205b5c83d5e5 SHA-1: 522ed80ff43d103c333671b53f0dc815c57408e1 SHA-256: b40c510f7306331301ea2bcb805cb4db0e08df582b442fb5f941a932d7f6370c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com' with a keyword related to PDF watermark removal. The document body also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm for SEO poisoning or traffic redirection. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be luring users to a malicious site via a seemingly helpful document.

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://ttraff.com/wb?keyword=remove%20watermark%20from%20pdf%20in%20acrobat In PDF document text
    • http://files.daryljarod.com/uploads/1/3/1/4/131453176/mimodeda.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/1/0432/2800/4507/files/lujezoluligewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/17958453685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3970/9589/files/nopafogoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8577/files/16860512251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/vifave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5736/2597/files/dexudufawejudubiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/wiritonividoworirumuzus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9822/6329/files/devi_kundalini_shakti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/nonasedadunobezab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/niwetapigosukeledefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6713/7438/files/savixekum.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B56 5452 bytes
SHA-256: 83236abc0d4c41a774bb5ffb71d89a41605929e2f48f1d3346a8b53c8ce20a68
font_01_sfnt_off00006de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE2 10000 bytes
SHA-256: 927fe986768c190ed4922310a21265c9a174fd6250eb4b2ab2cc88843b6943a5

Open this report in the interactive analyzer, or submit your own file for analysis.