Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d40a9bfcff4e62…

MALICIOUS

PDF

43.7 KB Created: 2020-08-17 17:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce531b7deccf594c5cd3ded8576b381f SHA-1: 6dfde3e6d31f7e8f4c3d136360fe6b2e6fb081ce SHA-256: d9d40a9bfcff4e627768c32ed59dfbcd7d996bb85aa87bfd31cc11f9a02a0746
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious File

The PDF contains numerous links to external resources, many of which are part of an SEO link farm designed to redirect users to malicious infrastructure. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document instructs the user to copy and paste content into a shell, a common tactic to bypass security controls and execute further malicious code. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector URL further supports malicious intent.

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.com/pify?keyword=android+bitmap+to+rgb+byte+array In PDF document text
    • http://files.marinarena.com/uploads/1/3/1/3/131397973/511152.pdfIn PDF document text
    • http://files.palmettoswingevents.com/uploads/1/3/2/8/132814241/8523336.pdfIn PDF document text
    • http://files.lukefranco.org/uploads/1/3/0/7/130776346/davola_jugulepa_kuzew.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/1/0433/1801/8216/files/kirarogurififekevakol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3873/5517/files/understanding_analysis_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/64866180357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/vorobota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38659434623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/gunotodupizekojotamebid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/calendars_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/50629751935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/49612468868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/dunovi.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_off000069b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B5 5300 bytes
SHA-256: cfbceec75eb1280b42af725fc9bcc544f46e420e6497071e9c629c427465ea61
font_01_sfnt_off00007b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9E 11908 bytes
SHA-256: 55ca718ee598f131f15266bd8863844af723966d463ba4d0f786210feaf58845

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