Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dc03b7b87e60ae9…

MALICIOUS

PDF

57.4 KB Created: 2020-08-03 21:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91bdb0224b443dfa9742df6fa63664fe SHA-1: f5f78bfd5293e4e7cc003382ede34767ae7bdb6b SHA-256: 4dc03b7b87e60ae9ca42caf34da150c72c8e110509f7c1f054aa5ac7963a3c73
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=international%20convention%20on%20biological%20diversity%20pdf'. Additionally, a PDF SEO link farm heuristic indicates the presence of numerous external links, with 'https://cdn.shopify.com/s/files/1/0431/7573/9553/files/nipitazabanod.pdf' being the first identified. The document body, though heavily obfuscated, also contains the same redirector URL. This suggests a phishing or scam attempt leveraging SEO techniques to distribute malicious links.

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=international%20convention%20on%20biological%20diversity%20pdf In PDF document text
    • http://files.acornspre-school.com/uploads/1/3/1/3/131384127/5997725.pdfIn PDF document text
    • http://files.financialsteps.org/uploads/1/3/2/3/132302749/roxero-tuluxafimo.pdfIn PDF document text
    • http://files.eroticabotanica.com/uploads/1/3/1/4/131453436/2670750.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/1/0431/7573/9553/files/nipitazabanod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/26251302712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/wipelikal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/1._7._10_pvp_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4386/4224/files/open_from_terminal_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/sugalilakegumiwokifenad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/lasodazulose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/10580608795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/bopanowolasesibowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/xadesuzukoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/vazuxamaxamukitetumumezom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/nokelilelidirolikesopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0184/7713/files/seluxixojozawu.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 4

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_off0000a248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA248 5564 bytes
SHA-256: ec17b3ec73d1db927907a9808af1228fdfe182e746b7d3f2813b87dbcffec3ea
font_01_sfnt_off0000b54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB54C 10168 bytes
SHA-256: 9344524ee76b0ec3908f6e0bed60dc75596f7b315273e6e6cc1ee05868719f36

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