Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a78686e415ef66b…

MALICIOUS

PDF

32.7 KB Created: 2020-09-18 00:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84c9fcf90a74ae6b1aa7f499bce823e6 SHA-1: bcfc19a7b0aae18d6295b0b873fda324320878a6 SHA-256: 0a78686e415ef66b7543af0ed4b5e44be678cba2ca367c6c8c2c1a369765d9cc
184 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, functioning as a link farm. One of these links, 'https://ttraff.club/wix?keyword=nioh+return+of+the+gourd+easy', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an intent to lure users to malicious infrastructure. The presence of multiple PDF links and disposable hosting indicates a potential SEO poisoning or traffic generation scheme.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=nioh+return+of+the+gourd+easy In PDF document text
    • http://resopebed.livelaughlovedream.com/uploads/1/3/0/7/130738955/8979a75c.pdfIn PDF document text
    • http://fogibi.handsfeetandwings.candletothesun.com/uploads/1/3/2/6/132681464/wubusifak_bomivasixivid_wufureju.pdfIn PDF document text
    • http://files.teamsabo.com/uploads/1/3/0/9/130969498/2287282.pdfIn PDF document text
    • http://files.lovebatonrouge.com/uploads/1/3/0/8/130814120/2059525.pdfIn PDF document text
    • http://sebaradi.carlapasqualini.com/uploads/1/3/1/1/131164394/benajekezituj.pdfIn PDF document text
    • http://jenokataz.abridgedinvesting.com/uploads/1/3/1/6/131606620/fesawiduxakinagaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a586a7d5-4387-469a-831f-ce010c37ca2a.filesusr.com/ugd/98e2de_de98f17564fe45b3a451c42d2fa86a92.pdf?index=trueIn PDF document text
    • https://ffa4f73e-7f12-40db-8ae4-9d42a4f4916e.filesusr.com/ugd/ace02d_03b9ee368ba641fbb5e6212d60c6e100.pdf?index=trueIn PDF document text
    • https://89d9d0c8-499d-434f-a5ae-1ab5c4c722ed.filesusr.com/ugd/e3ff21_75be04f8f02c4e1f953a68dcc6450fb8.pdf?index=trueIn PDF document text
    • https://02011adf-0f80-4842-ab7b-6d0e7fe92291.filesusr.com/ugd/b48b60_633eb38d41374f97a7e9f05f7b056bc4.pdf?index=trueIn PDF document text
    • https://14fec5c5-2eac-40b8-9f84-e415a7aa3cf7.filesusr.com/ugd/808cd0_736614e0c9c8446da9a7ac0a5264cb48.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3549/0461/files/filmora_mac_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/android_studio_barcode_scanner_google_vision.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 5

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_off0000434a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x434A 5208 bytes
SHA-256: 686ff8b9e5a9f6eff6a366b49d1573c5bf8b093eb3e61f3f22cfc4b325b9ce42
font_01_sfnt_off00005508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5508 9784 bytes
SHA-256: 398ce82a82958e0c91a689f917fb74d8f8d295099e068691b4093cc6c16d6080

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