Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba07444a689dac08…

MALICIOUS

PDF

42.4 KB Created: 2020-08-12 02:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a0e0898c92c7eb7d7f7434cf533d281 SHA-1: 7e42aaf3e93b6cb28627d7809305fd9d3c68db1b SHA-256: ba07444a689dac0815601e2ed074194bf9ea0a6ad1e4dc2b602a2ec89beacf42
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=ks2+maths+worksheets+year+3+pdf', which is also present in the heuristics as a critical finding. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=ks2+maths+worksheets+year+3+pdf In PDF document text
    • http://files.davefortuneserigraphy.com/uploads/1/3/1/0/131070920/tekupewut_nosesulamarez_jabuwifis.pdfIn PDF document text
    • http://files.chantitdownradio.com/uploads/1/3/1/8/131871518/02bd4f5e6b0d210.pdfIn PDF document text
    • http://files.borelgame.com/uploads/1/3/1/3/131383954/kimuselag-kozegoxuleboti.pdfIn PDF document text
    • http://files.animalhealthcentre.ca/uploads/1/3/0/8/130874086/730ba6.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/1/0435/3005/9940/files/zinokexezirugenatux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6712/7446/files/sadurolupabele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0352/5794/files/dodge_neon_srt4_top_speed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8071/8238/files/62453394410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8695/files/29020358576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/59678241641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/auto_repair_work_order_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/clinical_chemistry_lab_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/bunetupabetotelabok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/92435266657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/wiwikuxinuruvimovuvoreb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/64975476140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7565/6097/files/migovezoverivuvewebel.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_off000065e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E3 5772 bytes
SHA-256: 7ea7c453970fe0eeac0ba0ff45ee181162ff15c8e6b67b72e448cc36ad3cfc8f
font_01_sfnt_off0000797f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x797F 10228 bytes
SHA-256: ad2e9cac0b793c16aff72f13c63041618fab770c9f2d2212c19134c1219088d5

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