Malicious PDF — malware analysis report

Static analysis result for SHA-256 e715aa0f590576f8…

MALICIOUS

PDF

40.7 KB Created: 2020-07-29 18:31:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 82bf6da9889f8939c54708eaef2d9e4d SHA-1: fe4c7e6aade59932048cc08edd7a7bdfb472ab36 SHA-256: e715aa0f590576f852b252d071ad70aac8e21181618d7382f584007ab4771900
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 of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, appears to contain keywords related to educational materials, suggesting a lure to disguise the malicious intent. The presence of numerous external links, including a link farm, indicates an attempt to drive traffic to potentially harmful sites.

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=cambridge+checkpoint+science+textbook+1+pdf In PDF document text
    • http://files.becomingsarh.com/uploads/1/3/0/7/130739567/3400932.pdfIn PDF document text
    • http://files.pilatesofweston.com/uploads/1/3/1/8/131856937/11e9435fdc0fdc8.pdfIn PDF document text
    • http://files.chitownlimos.net/uploads/1/3/1/1/131164387/viwaseru.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/1/0433/5940/4197/files/2395822822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8198/1347/files/61950417595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2307/2412/files/tuloxelosaxaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/sasuketigesozuwebobatov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4109/4817/files/jurabevexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/71629191175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/22664227009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/tavepaxutosevimeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/56766937259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/tufuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/metumolesexom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6217/1550/files/98454181601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/49350757561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/14818754813.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_off00005cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC9 5672 bytes
SHA-256: c3f89861477d3fd0dea3caa51cbf255aa8f47e958aaeda432eba9c3bad64c829
font_01_sfnt_off00006ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF2 11248 bytes
SHA-256: 9c4819514d165b13c2918b032faf3efacbe9d8711ce4ca8372763b5c8a341f20

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