Malicious PDF — malware analysis report

Static analysis result for SHA-256 1748a5cef8b6fc3b…

MALICIOUS

PDF

44.5 KB Created: 2020-08-06 05:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c536c5b0990e91fee6cc51d5cbec4b2 SHA-1: e0160ee2d5dd623d2687f3f4a8bd9924090b8143 SHA-256: 1748a5cef8b6fc3b9a3042c488b3bcd0e6548845aadfe072b627bfba09490368
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service designed to obscure the final destination. The primary redirector URL is associated with malicious activity, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'lesson plan'.

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=sample+detailed+lesson+plan+in+english+pdf In PDF document text
    • http://files.budsdoobieclips.com/uploads/1/3/0/8/130874120/ronajepoxoketo.pdfIn PDF document text
    • http://files.mwsld.com/uploads/1/3/2/6/132696598/7790569.pdfIn PDF document text
    • http://files.missouriattorney.com/uploads/1/3/2/6/132696030/lositusomozosog.pdfIn PDF document text
    • http://files.rrjerez.net/uploads/1/3/1/0/131071256/5122286.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/1/0428/6591/8118/files/mosinafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/6546277106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/83392762790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/rare_candy_pixelmon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/38650228299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/vopaduxirano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/48004650759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/breakthrough_plus_2_teacher_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/a_muralha_da_china_kafka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mizamolapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8115/4204/files/vonezagobevenefifawuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/17495256912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5109/6993/files/90929793765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6119/0559/files/40425605562.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 7

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_off00006f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6D 5460 bytes
SHA-256: 34409677ab682d7878da528d9638925bd1bd45f4075cde5922ecdf68d25312ce
font_01_sfnt_off000081dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DD 10272 bytes
SHA-256: 6c24ba185b1794e6a80ccf924c5c1efe1eefa9a1e0579f3862ad2db776ee9afa

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