Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb75d980a63fc28b…

MALICIOUS

PDF

45.2 KB Created: 2020-07-30 18:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af34b67ffd0af95a7eeb534de230d45b SHA-1: 7d71122aa0d6a1e89f78d74c023634fdcf559f3a SHA-256: fb75d980a63fc28be39c6be1ecbcc2d5acd4a7a2dc36492e81d4847b5d292451
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by a PDF SEO link farm heuristic. The document body, though heavily obfuscated, contains text related to 'paper cutting templates pdf' and mentions 'wkhtmltopdf', suggesting a lure. The presence of a 'download button' heuristic reinforces the social engineering aspect. The primary malicious IOC is the redirector URL.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=paper+cutting+templates+pdf In PDF document text
    • http://files.roundhillat.org/uploads/1/3/1/8/131858287/viwutolo-muled-lozikexane-dakudax.pdfIn PDF document text
    • http://files.sweetchildofminephoto.com/uploads/1/3/1/6/131606343/piwitipixo.pdfIn PDF document text
    • http://files.joseluisperezjim.com/uploads/1/3/1/3/131383553/gejuxab.pdfIn PDF document text
    • http://files.arlenemurphyart.com/uploads/1/3/1/4/131408209/damosex.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/1/0431/3006/0955/files/85523310895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/sakuroxajipixageni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/vujerapobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/musixifofojanitem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4590/2746/files/fozazuxoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/44417825655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7637/8014/files/sonufobowobenefap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/61944459529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/bexakogumumekobomatidas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0314/0506/files/voxeveruxuwujozenepug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/32943836987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/vanililola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/lurulupawopiniluzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0348/6103/files/68556229567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.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_off00007431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7431 5248 bytes
SHA-256: 74bab87b0e6de26c6c77e8ca291696ff348e9318ce2b53a03cdf17eb7a4e540f
font_01_sfnt_off000085ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EA 9788 bytes
SHA-256: bc119377c448887100ecd3c54df2aa10fbceb740edb89951cdf1296d33eb6d1c

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