Malicious PDF — malware analysis report

Static analysis result for SHA-256 110c09bb2ed09be8…

MALICIOUS

PDF

39.5 KB Created: 2020-08-14 19:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61346cf165ac5c327add198f1fa7947c SHA-1: 6dee249c71bcd87eae78883efc68780cae909c97 SHA-256: 110c09bb2ed09be88860b6a1275402fffb23bc5d1ee98d68cb351ff92377b45c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector URL identified as malicious. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a pattern of linking to external sites, likely for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were explicitly extracted, the embedded URLs and the nature of the heuristics suggest an attempt to redirect the user to a malicious site.

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.ru/wb?keyword=personal%20space%20camp%20activities%20pdf In PDF document text
    • http://files.blacktriviabooks.com/uploads/1/3/2/6/132695194/9644589.pdfIn PDF document text
    • http://files.modernterrain.com/uploads/1/3/1/4/131453944/6f4b3c8565b6736.pdfIn PDF document text
    • http://files.2byacht.com/uploads/1/3/1/8/131871553/962640.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/1/0435/8291/4723/files/egypt_pyramids_history_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/vutokodosez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/50888791667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/99269578762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5441/4494/files/fairyland_3_activity_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/41021014672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/practical_english_usage_filetype.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/22621321702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1108/3160/files/rashi_chakra_sharad_upadhye_book_in_marathi.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 2

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_off00005cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 5364 bytes
SHA-256: 0ee9b32f9fcc79060b0d7f6d7c65fd6c6e9b4866cd95f01306f7ed58d1a175a4
font_01_sfnt_off00006edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDB 10060 bytes
SHA-256: d469e0a4e1b6709afcd92849b431d0ebde2bb2e8b9959588aea5ae1df5a62ed6

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