Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4de05dbc01d3e7d…

MALICIOUS

PDF

39.1 KB Created: 2020-08-01 22:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66da4942245040fc618e178a3f22d71b SHA-1: 85607a743d53a1fbbce632dea097fbd1c5a5ecd7 SHA-256: a4de05dbc01d3e7d237d8abaa59b8ae926b24407d8e9d923f147dca797e43fe0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a PDF redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text referencing 'Discord font changed' and the malicious URL, suggesting a social engineering lure to trick users into clicking the link.

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.cc/pify?keyword=discord+font+changed In PDF document text
    • http://files.mairibudreau.com/uploads/1/3/0/7/130776864/ziwawajobigogefivane.pdfIn PDF document text
    • http://files.davidgloverproductions.com/uploads/1/3/0/7/130738892/varatib.pdfIn PDF document text
    • http://files.retirementtimeline.com/uploads/1/3/1/3/131398385/d3035473.pdfIn PDF document text
    • http://files.cicelmarketing.com/uploads/1/3/1/4/131406403/zetoterawejifig.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/1/0433/0687/7080/files/46552055365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/daluvinalixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/94673597545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6628/6490/files/2347224609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/90039328663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/21562878326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/all-_i_vs_ipb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/ruxopovemuvelonidafuvurad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9919/2486/files/dumosixepopiger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/27644330562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1945/9998/files/95643405690.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 8

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_off00005ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA8 5252 bytes
SHA-256: 76d67cf4d3c81fcb3d61ea712d841cee3f54dd6b9f6d1b5a1e43b4991b33b6b5
font_01_sfnt_off00006e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E84 9748 bytes
SHA-256: d5baebed9f5279e7b56d8ea53cf4db664e544f53644f78a860b23fd9debd4d50

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