Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fd156f57f838e6b…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 21:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a076e051bc66c5b5494016083db1f42 SHA-1: f1d2bfedf24e0f39558edd3ff4d170cffd2fdc97 SHA-256: 7fd156f57f838e6bc1cdf08ee34c047d43dafd48911c5f0d4f656dd17a85b031
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=how+are+crepuscular+rays+formed', which is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting a malicious website, likely for phishing or malware distribution.

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=how+are+crepuscular+rays+formed In PDF document text
    • http://files.vinoforvasculitis.com/uploads/1/3/1/4/131437530/9041866.pdfIn PDF document text
    • http://vuwuz.northsummitffa.org/uploads/1/3/2/6/132681670/zutogiwi_sokizigimo_vinamenax.pdfIn PDF document text
    • http://sowexo.jackiesskinbeautiful.com/uploads/1/3/1/8/131871390/a839af45e.pdfIn PDF document text
    • http://files.youthultimateprogram.org/uploads/1/3/2/6/132681479/838326da5.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/1/0431/8609/4248/files/africa_s_hidden_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2792/2076/files/78970020498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1548/7135/files/vapajus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/nidubuvizumuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/51155581175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/75639332723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1587610690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/7139143914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/graphic_design_leaflet_templates.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_off000064ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 5456 bytes
SHA-256: 1332692594f41dd41f1d41d5d315dc3853862257d6d80a9e817e55c6b11188e5
font_01_sfnt_off0000775c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775C 10012 bytes
SHA-256: 539332562e492fec3e0f042d6ad88fc3b9c8c525dd2f14f937ce2bcc723b8080

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