Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a53ed414687151…

MALICIOUS

PDF

33.8 KB Created: 2020-08-09 18:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 252c49177080ead0bcc7e296dcc8fe93 SHA-1: 70551c3a3e576dee10e7634509168e4b9dccad9f SHA-256: 64a53ed4146871516c2c0aaae3371488accd476cc81a3bc7b6be706c962e7be7
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text and URLs that suggest a lure for free downloads, specifically mentioning 'school subjects word search pdf'. The primary malicious URL identified is https://ttraff.com/pify?keyword=school+subjects+word+search+pdf, which is likely used to redirect users to a malicious site. No scripts were extracted, but the PDF structure and embedded links indicate a social engineering attack.

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=school+subjects+word+search+pdf In PDF document text
    • http://bakoli.housingnearihop.com/uploads/1/3/1/6/131607163/kexovasowipogilibu.pdfIn PDF document text
    • http://files.store.wabashfriendscounseling.com/uploads/1/3/0/7/130775853/76ea162.pdfIn PDF document text
    • http://files.seashellsandlemons.com/uploads/1/3/0/8/130814390/vudaneb.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/1/0438/2756/0598/files/medical_english_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/fizefegelidakijel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/biochemical_engineering_and_biotechnology_najafpour.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7862/2115/files/35768383879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/98482542527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7519/files/microbiologia_veterinaria_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/kopiwomukopopujigazugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/mopemezevefezejenudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/kandungan_gizi_belimbing_wuluh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7895/7718/files/49046904911.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 5

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_off0000467e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x467E 5656 bytes
SHA-256: 61509a5defd98c43da83e1981117cc7cf407403fd2c3ab11f27ec34ab3784b29
font_01_sfnt_off000059c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C9 9616 bytes
SHA-256: ba25ff43834f56aba9cf674c9286d5df4e41002d06b60256be56d763ca9de481

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