Malicious PDF — malware analysis report

Static analysis result for SHA-256 775229c1e5c6a2eb…

MALICIOUS

PDF

44.2 KB Created: 2020-08-24 22:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e900e690449ece1ecfc651f00329936 SHA-1: 4af36fac9e635af90ccf28a95f97c503f00cf748 SHA-256: 775229c1e5c6a2eb626f491a82884a27dc9f5e17c1dbdda631d966581dc225d4
194 Risk Score

Malware Insights

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

This PDF file contains numerous links, including a primary redirector URL, designed to manipulate search engine results and lure users to potentially malicious content. The heuristic firings indicate the PDF is a link farm and redirects to known malicious infrastructure. While no scripts were extracted, the embedded URLs and the nature of the link farm suggest a phishing or malware distribution attempt.

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=brooklyn+99+meme+template In PDF document text
    • http://files.oxfordhpc.org/uploads/1/3/1/4/131454950/1272330.pdfIn PDF document text
    • http://lawixafo.ikhlastours.co.nz/uploads/1/3/2/3/132303093/9422080.pdfIn PDF document text
    • http://files.not4cell.com/uploads/1/3/0/8/130874655/vavorupiloje.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/1/0433/2588/2518/files/rifitelekixinalus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3385/4101/files/adenoma_tubulovelloso_con_displasia_de_bajo_grado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/bitate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8217/6917/files/79461980757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/33669720632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/5009/7829/files/zmi_altar_guide_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/923229711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/xixivexokapakoralon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6472/8483/files/zijikobukagirubiwad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/free_magazine_direct_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/format_of_a_report_writing_with_sample.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000641a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641A 4896 bytes
SHA-256: 6a94fc5a2cb31a2f447f0a06dee53a3d9f986a26e8948b4ff36653abbd40a030
font_01_sfnt_off000074aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AA 9788 bytes
SHA-256: 5a750b344fa725675863b707a165a320cd426b9a9e8d4dbc098df873b15d304b
font_02_sfnt_off0000961f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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