Malicious PDF — malware analysis report

Static analysis result for SHA-256 866ebb9fcead9718…

MALICIOUS

PDF

73.8 KB Created: 2020-08-16 22:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f7da0a5b7e5cbdba1633e447e02b2aa SHA-1: 9ef46421cec045d7e93bb853a8d4b4767610d2c7 SHA-256: 866ebb9fcead9718d81d670e116f7adc5fcfee8ca60399f7d47040e8c9f55175
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as a link farm for SEO purposes, with many pointing to benign Shopify URLs. However, a critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is also present in the document body. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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/pify?keyword=michelin+guide+restaurants+nyc In PDF document text
    • http://files.marvinsmarvels.org/uploads/1/3/0/9/130969429/57614.pdfIn PDF document text
    • http://files.hungerandthirsttheatre.com/uploads/1/3/2/6/132681452/6667821.pdfIn PDF document text
    • http://files.fatherscott.org/uploads/1/3/0/7/130739023/mopoxunijijasi_nazobetumafu.pdfIn PDF document text
    • http://files.educationsymposium2019.com/uploads/1/3/1/3/131380759/wiposifotona.pdfIn PDF document text
    • http://files.salemuccgilbertpa.com/uploads/1/3/2/6/132681392/2530921.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/1/0438/3630/9666/files/discord_text_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/bavovekun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7222/4421/files/76808289783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9276/0994/files/30643602171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3310/0439/files/49557497706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/44854249854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/17152846292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4223/2725/files/cours_d_agronomie_gnrale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/zosowakepoluru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/nazovixikuloduvepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/assistant_store_manager_resume_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1095/files/maelstrom_arena_guide_veteran.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 8

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_off0000d5c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C9 5308 bytes
SHA-256: e99bd1cc46eeaa6ef4c01b1f75cf3f541e5744ab3292f7b5db2012944a37ea10
font_01_sfnt_off0000e7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D1 16092 bytes
SHA-256: 500840ee6e2046211f240cd9f44af7274a1a1371f504b70717be3cb7384ba9d1

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