Malicious PDF — malware analysis report

Static analysis result for SHA-256 913110e8ec678a63…

MALICIOUS

PDF

35.6 KB Created: 2020-11-05 22:25:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e35ff0c942fa2c0dbe9c170fd3064c4a SHA-1: 768594bc49c051ec3646fc747483bec5e48f042d SHA-256: 913110e8ec678a630c68f55473a0802dea1b158f09fd891870250b50f362f85e
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector for phishing or malware distribution. The document body, though heavily obfuscated, contains the same malicious URL and a lure related to 'La vida contemporanea AP Spanish answers', suggesting a social engineering pretext. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/123?keyword=la+vida+contemporanea+ap+spanish+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4453129/normal_5fa2174144d2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401973/normal_5fa04d697dd1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_5f97341519a92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_5f9a81eb7245c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376096/normal_5f9325582d2e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387925/normal_5f96ecf9ec371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5fa399622d6c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391008/normal_5f9da961c0c47.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/94307388551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b6f6eb5-61af-42b5-896d-efa1acdf1585/68607921700.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/28515517504.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/vujifinefekonugaseralazow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e287cc7-5a6e-42a4-9ee4-7a0332d8da82/yahoo_finance_portfolio_1.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_off00004c6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C6A 5376 bytes
SHA-256: d25d1432c24e830398878389a9ec534d49c0ecc29a524fad1da71bd941423363
font_01_sfnt_off00005e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9E 10600 bytes
SHA-256: e6a83c1a5907befa28e9ce3b49e8b81618d3c09c668b424b3eed046c31be5348

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