Malicious PDF — malware analysis report

Static analysis result for SHA-256 663f2a2d5ed47159…

MALICIOUS

PDF

49.2 KB Created: 2020-08-16 19:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14ef8310ba4ae3cc3f2d6e63446a363e SHA-1: 19239496ab80dea3fee2f019231ff2ea2d954779 SHA-256: 663f2a2d5ed47159ea8212c14b56efd17dbef178696394861d995bbd3557b1f6
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, identified as a redirector for SEO link farms. The document body, though heavily obfuscated, contains text related to 'Julius Caesar modern translation pdf' and the malicious URL, suggesting a phishing or scam lure. The ML classifier strongly indicates maliciousness.

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=julius+caesar+modern+translation+pdf In PDF document text
    • http://files.saintsugaroflondon.com/uploads/1/3/1/8/131871587/915e3.pdfIn PDF document text
    • http://gefad.bigcreekkennels.com/uploads/1/3/0/9/130969742/387c9b5f5f07.pdfIn PDF document text
    • http://bezotaba.doitallpressionals.com/uploads/1/3/0/7/130776485/55a095.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/1/0437/9587/3949/files/94268211947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/30114024963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/18646480139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0586/9213/files/42911263644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6969/0276/files/62178248762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/99604330046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/descriptive_writing_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5796/2405/files/tutikirawedepaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/luvimudokafewevonekezifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4583/1324/files/69410293089.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 3

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_off00008168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8168 5288 bytes
SHA-256: be92894b3bcc7907b8324ca17c425bfa382b0e1080f9b8959b3d7985a79179e7
font_01_sfnt_off00009347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9347 10600 bytes
SHA-256: 1fcda8afb357de47c5652b42215db023829f9c24ee131ef16217ec1a0082c571

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