Malicious PDF — malware analysis report

Static analysis result for SHA-256 84cec516c149bb3d…

MALICIOUS

PDF

156.7 KB Created: 2020-08-07 01:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b3bd9133e74dc579195ee6243c38be0 SHA-1: 8d81f256057f47a4f61107260d44efca2ddaeb06 SHA-256: 84cec516c149bb3d2eb4474cdaf13ed056cf21162276a39fad544893cb379616
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a phishing or scam attempt to lure users to a compromised website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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/wb?keyword=sustainable%20development%20and%20environmental%20protection%20appsc%20in%20telugu%20pdf In PDF document text
    • http://files.lykeys.com.au/uploads/1/3/0/8/130873869/29c4020b7.pdfIn PDF document text
    • http://files.oldfallingsurc.org/uploads/1/3/1/3/131380625/d3d65da08b.pdfIn PDF document text
    • http://files.conquergoodcreative.com/uploads/1/3/0/7/130776245/610981.pdfIn PDF document text
    • http://files.heathernorrisart.com/uploads/1/3/1/3/131398097/makixuxejovor_lusap.pdfIn PDF document text
    • http://daxolawe.kangarooclubhouse.com/uploads/1/3/0/7/130775432/8cdbdae1aef90.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3048/5912/files/fafusujine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/byzantine_church_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0461/5066/files/3653573348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9593/9488/files/mijekon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/folofimebumol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/72186562399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/anleitung_zur_anlage_er_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/multivariate_data_analysis_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/nojekesurorepupixeparunes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/fivojipidakafaruzeka.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_off0001b3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B3FA 5780 bytes
SHA-256: 4389680202f7c1371848a1499b9442fd2d06dc306072d41de0e26df17eff9099
font_01_sfnt_off0001c797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C797 69912 bytes
SHA-256: eb50fc29a2b764c6db2dba3e3a73e504ea805a0e8c2f1262f0278e4bd1c46c2b
font_02_sfnt_off00024083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24083 9564 bytes
SHA-256: 3e558228b1a1c75d196031595f4b705db11568597c418418c5c0d30f94292e10

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