Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f42170bc5941b94…

MALICIOUS

PDF

51.2 KB Created: 2020-08-11 00:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 659c70bed2b4ffdf2fc5d31310355e1e SHA-1: 7dd72484043c062e0a7b87234c9298722b3ff076 SHA-256: 1f42170bc5941b943da584b1a6e0185c801085bf76f9f0c93ea694155747ea53
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL is https://ttraff.cc/pify?keyword=functional+neurological+disorder+pdf, which is likely used to redirect the user to a further malicious destination.

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=functional+neurological+disorder+pdf In PDF document text
    • http://files.bbluntsheabutter.shop/uploads/1/3/1/3/131383018/bajof.pdfIn PDF document text
    • http://files.upwellings.com/uploads/1/3/1/6/131607174/c3eb020e.pdfIn PDF document text
    • http://files.christchurchguilford.org/uploads/1/3/1/3/131379398/5227456.pdfIn PDF document text
    • http://files.goodteacherafc.com/uploads/1/3/2/6/132681426/05f78f1.pdfIn PDF document text
    • http://files.jennyshepherdphotography.com/uploads/1/3/0/8/130814682/e6f3c54.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/1/0434/3096/9511/files/33987505854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/drug_metabolism_phase_1_and_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/amazon_carding_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1013/8017/files/27686039000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/71715065401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/4584318362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9829/0856/files/lalisodarer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/zixisativuxazidujanuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/gogokideweraviret.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/kesesixosowumivurilusa.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_off00008809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8809 5276 bytes
SHA-256: 4c5b3b68ac045d4b95e9abae91e46bc091eae388b1b8afbf40f9cdb2ce283fc3
font_01_sfnt_off00009a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A05 11472 bytes
SHA-256: 95aca3730f3b0f71d8f9812f68ee0603f81af18b424b74e5bb9cdb69e4ddab07

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