Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b09af2f78d1144…

MALICIOUS

PDF

40.5 KB Created: 2020-08-07 20:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9fb900b1debafc3fa60f2d502507a19 SHA-1: 8b50f847b0d2286b096cbfebdc5a7df0214c32b2 SHA-256: 69b09af2f78d114432f712273f2a82c6afa0f7ee1cbf0ccfcca0c71a9edf0c09
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) disguised as a 'barcarolle piano pdf' download. This indicates a phishing or malware distribution attempt, likely using a spearphishing attachment as the initial access vector. The ML classifier strongly supports the malicious nature of this PDF.

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=barcarolle+piano+pdf In PDF document text
    • http://files.hairandmakeupbyalicia.com/uploads/1/3/0/7/130739309/5defd.pdfIn PDF document text
    • http://files.ironfistboxing.org/uploads/1/3/0/7/130776245/rosevajegizufunik.pdfIn PDF document text
    • http://files.bloomingfulbirths.co.uk/uploads/1/3/2/6/132695351/diwaraxaxo-nopewalaval-dagekagano-gulamurosem.pdfIn PDF document text
    • http://files.chennaishiayouth.com/uploads/1/3/1/3/131398498/lonedizetosadezu.pdfIn PDF document text
    • http://files.vitalsignsfitness.com/uploads/1/3/1/4/131483307/793237.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/1/0430/0364/2007/files/50940962782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/wuzexutisulidumitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9723/5363/files/mudijejasirunegaperip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/11279966016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/4406582096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/gem_install_specific_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5800/3096/files/33426754456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/80138439960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/nupejadipopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/wizodozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/ledifasekozidapo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6197 5020 bytes
SHA-256: 2d31e3d90d426c3eb60b0da9c7d722d114b8c0acd368e07a34bad0880eed74f7
font_01_sfnt_off000072bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BD 10112 bytes
SHA-256: 42a86e3e0c78bb7514e0c5ffbbe984193056f1a2046a7f52c41fbae57f5b4074

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