Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebb8a9147e8a5ad…

MALICIOUS

PDF

46.3 KB Created: 2020-08-19 09:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65e052891ee26f3e2e29ffdffdbf0425 SHA-1: 0ac97245f3cfb30812468ff74aad5bf8a8c76e28 SHA-256: 5ebb8a9147e8a5ad4e800460833fb0eaeedc5ceeda583eaee8f01b07e96cc52b
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.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and a list of other URLs, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to an attempt to lead the user to malicious content.

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.cc/pify?keyword=sqlite+android+insert+function In PDF document text
    • http://baxixegef.cworkssystems.com/uploads/1/3/0/7/130739113/kunusamotujev-xuwidemisupuxu.pdfIn PDF document text
    • http://files.zonialucero.com/uploads/1/3/1/4/131408970/kakowok_revajejopomofu_roxakabuvofokix.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/1/0432/6273/8592/files/bekipumim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/89619517344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/88690661277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/changing_to_word_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/breakthrough_plus_2_student_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7618/5253/files/materiales_compuestos_aeronautica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/suvalewun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/warehouse_keeper_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/lixudafosubep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8738/9087/files/19076437413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9499/files/nickel_based_alloys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/fipebizipig.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 1

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_off00006a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A94 5244 bytes
SHA-256: cf02bee2e33429b8ef815116d19c3fd698b3afe29d8368321d46e5f32b8b7108
font_01_sfnt_off00007c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C69 15548 bytes
SHA-256: 4ba61eb8acfb5ec9272005f84b83264c6ec174305e001cda6f31d3a228f1d271

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