Malicious PDF — malware analysis report

Static analysis result for SHA-256 f55b5ab97a97a43a…

MALICIOUS

PDF

38.7 KB Created: 2020-08-12 23:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bda19815fa6e67819caf666f9456a90e SHA-1: cb8957a6677c8288586418be0d6f268d3601f9fa SHA-256: f55b5ab97a97a43ad5b1b1efe3a79637cb3cbbc845db6eba5a4e130071a90220
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, directing users to a URL containing a search query. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. The document body itself is heavily obfuscated but contains the search query and a URL, reinforcing the lure.

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/wb?keyword=179cc%20craftsman%20snowblower%20manual In PDF document text
    • http://files.sparksprotectionusa.com/uploads/1/3/2/6/132682792/540571.pdfIn PDF document text
    • http://zanix.ellensdolls.com/uploads/1/3/2/6/132696323/nikovologuvezuk-wokunuzu-gegixuf-vapew.pdfIn PDF document text
    • http://files.danyeldevilliers.com/uploads/1/3/1/3/131379594/negumen.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/1/0433/0160/1444/files/weather_moscow_id.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5625/8454/files/gaxewibijutidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/brucellose_caprine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6649/8965/files/74055515865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6844/0224/files/google_translate_chinese_to_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5534/files/62600137321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/bleaching_powder_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5598/6326/files/algebra_word_problems_worksheet_grade_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/91179430593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/jekugapufenujixipomux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/vurajukerimesuzefagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6277/9295/files/rnase_protection_assay.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: advanceddentalimplantstudies.com 4 samples

Related samples 6

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_off00005907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5907 5452 bytes
SHA-256: e6e1d9bd5a30aa0b3d80eb8f386179a82bf68c1b3c28277c5a1e5974cb9ad5f4
font_01_sfnt_off00006b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8F 10144 bytes
SHA-256: db5a148d0c55f5fad4a742cb623799a411183832b8bc26413f20773deb027126

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