Malicious PDF — malware analysis report

Static analysis result for SHA-256 4711c185cd3392fa…

MALICIOUS

PDF

57.2 KB Created: 2020-08-14 13:55:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96f319594a79b77fe562254fadd5a683 SHA-1: a01c74c03a11a7097563f15e387bcb9cdb331aea SHA-256: 4711c185cd3392fa3ff9dad1fb014ac8b3e36413c56ad02d234e08eb136b6890
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a malicious redirector link pointing to ttraff.ru, which is a known malicious infrastructure. Additionally, the document body contains instructions that lure the user into executing commands via copy-pasting into a shell, a common technique for downloading and executing further stages. The presence of numerous external PDF links suggests a link farm for SEO poisoning, likely to attract victims to the malicious redirector.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/wb?keyword=leersia%20hexandra%20pdf In PDF document text
    • http://files.anovelcache.com/uploads/1/3/0/7/130776046/kixapi.pdfIn PDF document text
    • http://files.anamnostoshouse.com/uploads/1/3/1/0/131071145/tavak.pdfIn PDF document text
    • http://jisatul.diaryofaspectator.com/uploads/1/3/2/7/132740541/kenonusogoru.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/1/0437/6113/9861/files/31711074210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9535/9641/files/50341063462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/catering_management_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9966/7099/files/kufetewakine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/rainbow_mage_ffxiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/98189628347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8987/5364/files/90875677097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/tufameke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/lidorufiborinonepom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0271/6572/files/cadena_de_suministro_lala.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 3

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_off0000a130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA130 5108 bytes
SHA-256: 195eb5b506dc045a86e6b38d558f9cb35d59bf86c8ad603233f1e2d8d0cdc7e6
font_01_sfnt_off0000b28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB28C 10992 bytes
SHA-256: f0c2cd3fdf51053b76489797876b93db5dfdb99e2a81d9ab2f840477026527f7

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