Malicious PDF — malware analysis report

Static analysis result for SHA-256 0777e0090531d7dd…

MALICIOUS

PDF

46.2 KB Created: 2020-08-28 00:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52d398e9d302fb53eef839baf8e3dd68 SHA-1: 8e465bcc87ffc6fba1bc7038ac90be5f683ef3df SHA-256: 0777e0090531d7dd9a3c08420b308e8935e29ea55f52082f45c44b004ef7242b
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body also contains a URL pointing to a redirector, suggesting a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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.club/pify?keyword=apostila+tecnico+em+laboratorio+de+a In PDF document text
    • http://files.lifecoach-sacramento.com/uploads/1/3/2/8/132814468/7380723.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/1/0431/3264/9636/files/48918729613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/82034818027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/muwifezogatimizasuriroze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/cronica_de_una_muerte_anunciada_pers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6528/files/14175752020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9557/0072/files/54978801369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/24987913052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7110/3395/files/panolotisiwepexosav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4043/9446/files/23019531268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6558/1469/files/autodesk_maya_2013_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0484/6503/files/sowodesumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/67140661970.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 1

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_off00007045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7045 5348 bytes
SHA-256: e5108e78277e0dc0a439ff7dd1c1e443a8d49bc1752fc591c199cbba209a7aef
font_01_sfnt_off00008247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8247 13536 bytes
SHA-256: f81d556878cfca93651467b142ef9409324ed60a1e2f0246366169a265206bcd

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