Malicious PDF — malware analysis report

Static analysis result for SHA-256 18348257b3808357…

MALICIOUS

PDF

48.1 KB Created: 2020-08-12 03:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10fe0cdf5f5ac1ad2aa5796536250ae4 SHA-1: 9ab23f6f85e11f65ad5aec5df77790db06d01fbc SHA-256: 18348257b3808357e9381dbb45dcfb33f05340661a7fca682ce8cb5777919b9f
194 Risk Score

Malware Insights

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

The PDF contains multiple links to a redirector service, which in turn points to various Shopify-hosted PDF files. The primary redirector URL is https://ttraff.com/pify?keyword=advanced+business+writing+skills+pdf, which is flagged as malicious. This suggests a phishing or scam campaign using SEO-optimized PDF lures to drive traffic to malicious infrastructure. No scripts were extracted, but the embedded links are the primary attack vector.

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.com/pify?keyword=advanced+business+writing+skills+pdf In PDF document text
    • http://files.tikihula.com/uploads/1/3/1/4/131483336/941f672bf530f.pdfIn PDF document text
    • http://xibup.b4rnpr.org/uploads/1/3/0/7/130738632/8ddd105779b8.pdfIn PDF document text
    • http://files.apolloartdocent.com/uploads/1/3/0/8/130814169/c3e9a6f9.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/1/0431/5106/5243/files/58530616985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/turnigy_9x_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5078/files/10675442937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/joripikiwivixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/using_statistical_methods_in_social_science_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6776/7970/files/linkin_park_the_hunting_party_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9131/9201/files/zuxapubakusomowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0777/8717/files/19644308845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/biosurfactant_production.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/pobomiletiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52209678420.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 4

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_off00007b95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B95 5668 bytes
SHA-256: cc45769ec93a1c72b1abe15235994b576281694bafa82aaf05981a3aaf6b577a
font_01_sfnt_off00008efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFE 10748 bytes
SHA-256: 995fb2ce0d1072a0d13134982d6ff18687972ae1367e681f9f3df30c7952dac7

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