Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b9a6ed4067f216…

MALICIOUS

PDF

43.0 KB Created: 2020-08-22 01:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfa14bbb9f56108b462b1b48daf90c99 SHA-1: 79df222325f2c3e1e5b8824220b6b51d00deed02 SHA-256: 10b9a6ed4067f216dab90efe17b7d975d736c29553fadc53b389125fd706d09f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body and embedded links suggest a lure to download content, likely a phishing attempt or a downloader for further malicious payloads. The ML classifier strongly indicated maliciousness, and the presence of multiple external links supports a link farm or redirection attack pattern.

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.cc/pify?keyword=administrative+procedure+act+1946+pdf In PDF document text
    • http://getosa.wekeepyoumotivated.com/uploads/1/3/0/7/130739287/6037708.pdfIn PDF document text
    • http://files.jenskavhaug.com/uploads/1/3/0/9/130969004/8559988.pdfIn PDF document text
    • http://bemoz.dontlookdowntheatre.ca/uploads/1/3/0/7/130776078/28e761d3f0.pdfIn PDF document text
    • http://files.pianissimoensemble.com/uploads/1/3/1/4/131437318/3954533.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/1/0432/4392/9757/files/zenadebubevelimapikatuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8217/files/3129114987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9482/5376/files/think_like_a_man_watch_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7795/0881/files/star_spangled_banner_sheet_music_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/53613987374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/61021550975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/watermark_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0003/5490/files/mikajalig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/gojigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7006/0704/files/57579347476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/visokukeno.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_off00006a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1B 5768 bytes
SHA-256: 887acc7a9bb6c7c16c6218c78cc37fee8ce6b039067268427d1354d3b7fbc079
font_01_sfnt_off00007dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAB 9788 bytes
SHA-256: 9b9c25a610df12522b76ed1c456e2ec99667160fd91ddef435dea898b306f734

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