Malicious PDF — malware analysis report

Static analysis result for SHA-256 66848aafde0c5b29…

MALICIOUS

PDF

42.8 KB Created: 2020-08-15 06:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de2d1883284aa63224227f2f91c75e82 SHA-1: 5af6d5ce86b28bce454682f5aababd4fdfe122b8 SHA-256: 66848aafde0c5b294b6fe1898c311d757959388cda78b0e3213f866488182194
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm and a redirector link pointing to a known malicious URL, indicating a phishing or malware distribution attempt. The document body text, though heavily obfuscated, includes the malicious URL, suggesting an attempt to disguise the true nature of the link. The ML classifier strongly flagged this PDF as malicious.

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=maa+durga+bhajan++mr+jatt In PDF document text
    • http://files.jerrysmithoffices.com/uploads/1/3/1/0/131071082/3403402.pdfIn PDF document text
    • http://files.hubbellbros.com/uploads/1/3/0/9/130969656/80fb7ded0fab.pdfIn PDF document text
    • http://rifuvugoj.boreckyfruitfarm.com/uploads/1/3/1/4/131437237/7180691.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/1/0431/2183/6193/files/botukevimozuterinox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4827/1014/files/something_somebody_anything_anybody_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/toximibuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7725/4812/files/ahmedabad_news_paper_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/zumepamirelusamifamokid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/hdfc_mutual_fund_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/jikirog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/computer_abbreviations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/basic_income_tax_course_volume_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/metal_hammered_into_thin_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6077/1481/files/78647240603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/70227454385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3403/3824/files/kasodoram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/wigijapuzu.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 2

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_off00005fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBB 5252 bytes
SHA-256: 1ee6181131ab2574ab2dc110dda3b7a0c4fa51813564388e751b3fd9833b1b11
font_01_sfnt_off0000716b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716B 14708 bytes
SHA-256: d0c22638237a7499a5646011bd1a4a6487b9366f0040558c0337fcc4ef576f79

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