Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b806dbe4d0510a0…

MALICIOUS

PDF

45.7 KB Created: 2020-08-17 00:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 06879868d7a52a2da58532eab9b9e2c1 SHA-1: 608721dbe247a19ee87f0ee41d07eed5bbf3d4f3 SHA-256: 5b806dbe4d0510a037277cbb35ba8a710d7b0348cf18f5ead014632a1203e6ba
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and a large number of benign-looking PDF links, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.com/pify?keyword=japanese+encephalitis+vaccine+patient+information+leaflet, which is likely used to deliver a secondary payload or phish for credentials.

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=japanese+encephalitis+vaccine+patient+information+leaflet In PDF document text
    • http://files.lovebugweddingcars.co.uk/uploads/1/3/2/3/132303068/6245822.pdfIn PDF document text
    • http://files.carpetcleanoahu.com/uploads/1/3/1/3/131383602/zefot_tujopopafodaja_kojubutujara_xapesiwuka.pdfIn PDF document text
    • http://wuteza.roverchaseacademy.com/uploads/1/3/2/8/132815176/5127016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3778/6266/files/gujarati_barakhadi_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/virotugenipafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/firix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/225917544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1642/files/68607117239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/negusonefurukiwaseduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3267/files/impulse_control_activities_for_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/somufedigok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6404/7254/files/steuererklrung_2020_formular_anlage_av_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1896/0541/files/assertiveness_skills_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/60380297138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0793/3603/files/accounting_and_finance_cv_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6700/7386/files/jufufexakux.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6769 5092 bytes
SHA-256: 790a3d6bf69c7f26f1cc00613e8e8b037f1912da7c8504a5b5bbcd594fd83a20
font_01_sfnt_off0000787f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787F 10144 bytes
SHA-256: 7a919ee53f4541b20add6176d6e14a07d0681252ca6ec4bedb252fa8ff376608
font_02_sfnt_off00009b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B24 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e