Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5c8aeaa4744955…

MALICIOUS

PDF

57.8 KB Created: 2020-08-13 23:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0589bb3b4f2007454e769d3f9564859 SHA-1: 77fb742d49b7d0cf64c7add1c18d2c3ac1f65c83 SHA-256: 9d5c8aeaa4744955e806aa8906ebb7587575206c4767afcf8f6aaa5f7182129d
314 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF file contains a link farm and a malicious redirector URL, indicating a phishing or social engineering attempt. The document body and heuristics suggest the user is instructed to copy/paste content into a command-line interface and to disable security software, likely to facilitate the execution of a malicious payload. No scripts were extracted, limiting the ability to determine the exact payload or persistence mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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.
  • PHP webshell / backdoor source high WEBSHELL_PHP
    The file contains PHP server-side code with the signature of a webshell/backdoor (request input fed to a command/code-exec sink). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
  • 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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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/pify?keyword=anaconda+python+32+bit++windows In PDF document text
    • http://files.addedsouls.com/uploads/1/3/0/8/130873875/8855784.pdfIn PDF document text
    • http://setevi.habitatriwestbay.org/uploads/1/3/1/3/131383483/117343638b.pdfIn PDF document text
    • http://files.permittedtopause.co.uk/uploads/1/3/1/4/131407406/4010034.pdfIn PDF document text
    • http://files.rlcraftvinylstore.com/uploads/1/3/1/4/131453990/5af30c11ec.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/1/0432/5385/8472/files/rejivetesoniwewupufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2067/1386/files/dilolekibufiwapagibofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/berupavapow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wanojexabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5772/3030/files/calculus_early_transcendentals_11th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/http_filesify._com_wr6jfm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/kuxikowukefogewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2279/files/certiorari_and_prohibition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/helvetica_font_dafont.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7621/files/tiginoloxozu.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 6

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_off0000a148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA148 5652 bytes
SHA-256: be3df73e26110c627cae3c6c7d705973a66d5c11e66c7705eb91dab48b7c82b1
font_01_sfnt_off0000b491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB491 11816 bytes
SHA-256: 1252b89b98aeadd1cf78126a6f66262ba4767562f283bceff9eacf467e85b094

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