Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f44ee875f96ce3…

MALICIOUS

PDF

41.2 KB Created: 2020-08-09 09:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c863230aaab026a582531207fcea160 SHA-1: 0dff5afc47b875736f1198b5cffe0a6a6f0edc61 SHA-256: 66f44ee875f96ce32fedc426b8f565db96b56ff62e05acc96e6a28f148ca9eac
194 Risk Score

Malware Insights

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

The PDF contains multiple links to external resources, including a primary redirector URL that is flagged as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to disguise the malicious intent as a legitimate research document. The presence of numerous SEO-optimized PDF links further indicates a link farm or phishing campaign.

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=examples+of+assumptions+in+research+pdf In PDF document text
    • http://ganafore.bigislandghosttours.com/uploads/1/3/0/8/130814297/5400947.pdfIn PDF document text
    • http://batepip.bobbybrown.org/uploads/1/3/1/6/131637309/dijufu.pdfIn PDF document text
    • http://jekazi.123-give.com/uploads/1/3/0/7/130738799/741fa03989e9d99.pdfIn PDF document text
    • http://files.oxfordcitylionsfutsal.com/uploads/1/3/1/6/131637527/eb3b0.pdfIn PDF document text
    • http://lozoxomex.ucalumniband.org/uploads/1/3/1/6/131636725/5642201.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/1/0431/3700/7778/files/panufimifajefuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4996/6998/files/how_many_graham_crackers_in_a_package.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7872/0414/files/30972389002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3579/4327/files/28418313941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/common_stocks_and_uncommon_profits_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/65894334100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/kalma_tauheed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8248/0806/files/attila_pizza_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5902/5822/files/gasinurememepifojasaveguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/13870250408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3017/6159/files/99208331827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/modul_bilangan_bulat.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_off00006431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6431 5420 bytes
SHA-256: 1c1bd91ded72080b703308f1a13792caf547e7eec8ff5a59fb87c61631c584fb
font_01_sfnt_off00007676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7676 9788 bytes
SHA-256: f434471f22657cffbb43b57e962dcf1c24afbc7475f1d8ff95833e39c66613b9

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