Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dda414566ca1a99…

MALICIOUS

PDF

43.4 KB Created: 2020-08-05 06:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74d1588fa1c09ec87fc576b8e7f8d045 SHA-1: f82fd0bcff8e7d16c363bea8ac910464d85e360c SHA-256: 5dda414566ca1a9998ef840dc8e299f000172fcca4129e33f3ed00dae09abb7e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) disguised as a document about Sjogren's syndrome. This indicates a likely phishing or malware distribution attempt, leveraging SEO tactics to appear legitimate. The ML classifier strongly supports the malicious verdict.

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=sjogren+syndrome+adalah+pdf In PDF document text
    • http://files.showfancy.com/uploads/1/3/1/0/131070918/3693526.pdfIn PDF document text
    • http://files.holmevalleyfairtrade.com/uploads/1/3/1/6/131606198/rubabolewi.pdfIn PDF document text
    • http://files.cabinzecottage.com/uploads/1/3/2/3/132302966/ec84f7504.pdfIn PDF document text
    • http://purena.themissionhallproject.ca/uploads/1/3/1/4/131409909/1126394.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/1/0432/6057/5894/files/milan_kundera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1573/9304/files/word_make_one_page_landscape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3955/4727/files/69659081208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/saluvanotis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7900/7384/files/download_file_using_download_manager_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/podofofexub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/39891819263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/voxikagizujelufisekovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3521/4503/files/casebook_on_contract_law_jill_poole_13th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3006/7865/files/numebel.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
🗂 Part of campaign: holmevalleyfairtrade.com 3 samples

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_off00006b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B77 5736 bytes
SHA-256: 6209447a2bd6198ffa836dce7a5cc467b9a5d2b6a038e77acc8755752b621291
font_01_sfnt_off00007ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDE 10012 bytes
SHA-256: 976a96f6dd24faa8792b4479d5ef8f0f56158ac281fd1ffec7c3d25ba64b4f0c

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